Update relations package and add cmr package

Related change in IM: https://osm.etsi.org/gerrit/#/c/osm/IM/+/11212/

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/README.md

+# sshproxy
+
+## Description
+
+SSHProxy Charm example for Open Source MANO.
+
+The purpose of this charm is to operate a VNF via SSH. For this, the charm should know the hostname of the VNF (ip address), and the username. The charm will be in a blocked state until it has the hostname, username, and the credentials for SSH-ing to the VNF. Both hostname and username are set via config, with `ssh-hostname` and `ssh-username` respectively.
+
+There are two ways of specifying the credentials: password, keys. (See next section)
+
+
+## Usage
+
+This charm works for both LXD and K8s. By default, it will work on LXD. To make it work in K8s, just change the following in the `metadata.yaml`
+
+```yaml
+series:
+# - focal
+# - bionic
+# - xenial
+ - kubernetes
+ deployment:
+    mode: operator
+```
+
+### Prepare the environment:
+
+- LXD:
+
+```bash
+sudo snap install juju --classic
+juju bootstrap lxd
+juju add-model test
+```
+
+- K8s:
+
+```bash
+sudo snap install juju --classic
+sudo snap install microk8s --classic
+sudo microk8s.status --wait-ready
+sudo microk8s.enable storage dns
+juju bootstrap microk8s
+juju add-model test
+```
+
+### Deploying charm:
+
+```bash
+charmcraft build
+juju deploy ./sshproxy.charm
+```
+
+### Configuring the charm:
+
+First of all, set the username and hostname of the VNF:
+
+```bash
+juju config sshproxy ssh-hostname=<hostname> \
+                     ssh-username=<username>
+```
+
+#### Mirrors
+
+To workaround this [bug](https://bugs.launchpad.net/juju/+bug/1929399), use the following configurations of the charm to specify the urls of apt and security mirrors.
+
+```bash
+juju config sshproxy apt-mirror=<apt-mirror> \
+                     security-apt-mirror=<security-apt-mirror>
+```
+
+### Credentials
+
+There are two ways to set up the credentials for the charm to be able to SSH the VNF.
+
+With password:
+
+```bash
+juju config sshproxy ssh-password=<password>
+```
+
+With public keys:
+
+1. First get the public key from the charm
+
+```bash
+$ juju run-action sshproxy/0 get-ssh-public-key --wait
+unit-sshproxy-0:
+  UnitId: sshproxy/0
+  id: "12"
+  results:
+    pubkey: |
+      ssh-rsa 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 root@juju-73fac6-2
+  status: completed
+  timing:
+    completed: 2020-11-18 15:42:03 +0000 UTC
+    enqueued: 2020-11-18 15:42:00 +0000 UTC
+    started: 2020-11-18 15:42:03 +0000 UTC
+```
+2. Inject that key in `~/.ssh/authorized_keys` at the VNF
+3. Verify the ssh credentials
+
+```bash
+$ juju run-action sshproxy/0 verify-ssh-credentials --wait
+unit-sshproxy-0:
+  UnitId: sshproxy/0
+  id: "14"
+  results:
+    verified: "True"
+  status: completed
+  timing:
+    completed: 2020-11-18 15:39:30 +0000 UTC
+    enqueued: 2020-11-18 15:39:29 +0000 UTC
+    started: 2020-11-18 15:39:29 +0000 UTC
+```
+
+
+## Developing
+
+Create and activate a virtualenv with the development requirements:
+
+    virtualenv -p python3 venv
+    source venv/bin/activate
+    pip install -r requirements-dev.txt
+
+## Testing
+
+The Python operator framework includes a very nice harness for testing
+operator behaviour without full deployment. Just `run_tests`:
+
+    ./run_tests

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/actions.yaml

+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+#
+# This is only an example, and you should edit to suit your needs.
+# If you don't need actions, you can remove the file entirely.
+# It ties in to the example _on_fortune_action handler in src/charm.py
+touch:
+  description: "Touch a file on the VNF."
+  params:
+    filename:
+      description: "The name of the file to touch."
+      type: string
+      default: ""
+  required:
+    - filename
+
+# Standard OSM functions
+start:
+  description: "Stop the service on the VNF."
+stop:
+  description: "Stop the service on the VNF."
+restart:
+  description: "Stop the service on the VNF."
+reboot:
+  description: "Reboot the VNF virtual machine."
+upgrade:
+  description: "Upgrade the software on the VNF."
+
+# Required by charms.osm.sshproxy
+run:
+  description: "Run an arbitrary command"
+  params:
+    command:
+      description: "The command to execute."
+      type: string
+      default: ""
+  required:
+    - command
+generate-ssh-key:
+  description: "Generate a new SSH keypair for this unit. This will replace any existing previously generated keypair."
+verify-ssh-credentials:
+  description: "Verify that this unit can authenticate with server specified by ssh-hostname and ssh-username."
+get-ssh-public-key:
+  description: "Get the public SSH key for this unit."

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/charmcraft.yaml

+# Copyright 2021 Canonical Ltd.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+#
+# For those usages not covered by the Apache License, Version 2.0 please
+# contact: legal@canonical.com
+#
+# To get in touch with the maintainers, please contact:
+# osm-charmers@lists.launchpad.net
+##
+
+type: charm
+bases:
+  - build-on:
+      - name: ubuntu
+        channel: "20.04"
+        architectures: ["amd64"]
+    run-on:
+      - name: ubuntu
+        channel: "20.04"
+        architectures: [amd64]
+parts:
+  charm:
+    build-packages: [git]

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/config.yaml

+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+#
+# This is only an example, and you should edit to suit your needs.
+# If you don't need config, you can remove the file entirely.
+options:
+  ssh-hostname:
+    type: string
+    default: ""
+    description: "The hostname or IP address of the machine to"
+  ssh-username:
+    type: string
+    default: ""
+    description: "The username to login as."
+  ssh-password:
+    type: string
+    default: ""
+    description: "The password used to authenticate."
+  # ssh-private-key:
+  #     type: string
+  #     default: ""
+  #     description: "DEPRECATED. The private ssh key to be used to authenticate."
+  ssh-public-key:
+    type: string
+    default: ""
+    description: "The public key of this unit."
+  ssh-key-type:
+    type: string
+    default: "rsa"
+    description: "The type of encryption to use for the SSH key."
+  ssh-key-bits:
+    type: int
+    default: 4096
+    description: "The number of bits to use for the SSH key."
+  apt-mirror:
+    type: string
+    description: "Apt mirror. Only used for K8s proxy charms with Juju version lower than 2.9.4"
+  security-apt-mirror:
+    type: string
+    description: "Security Apt mirror. Only used for K8s proxy charms with Juju version lower than 2.9.4"

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/metadata.yaml

+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+name: sshproxy
+description: |
+  This is a basic example of an SSHProxy Charm for OSM
+summary: |
+  This charm should be used as a base for any Proxy Charm (SSH based)
+series:
+  # - focal
+  # - bionic
+  # - xenial
+  - kubernetes
+deployment:
+  mode: operator
+peers:
+  proxypeer:
+    interface: proxypeer
+provides:
+  interface:
+    interface: interface
+tags:
+  - osm
+  - proxycharm
+  - ssh

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/requirements-dev.txt

+-r requirements.txt
+flake8

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/requirements.txt

+ops
+packaging
+git+https://github.com/charmed-osm/charms.osm#egg=charms.osm

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/run_tests

+#!/bin/sh -e
+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+
+if [ -z "$VIRTUAL_ENV" -a -d venv/ ]; then
+    . venv/bin/activate
+fi
+
+if [ -z "$PYTHONPATH" ]; then
+    export PYTHONPATH=src
+else
+    export PYTHONPATH="src:$PYTHONPATH"
+fi
+
+flake8
+python3 -m unittest -v "$@"

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/src/charm.py

+#!/usr/bin/env python3
+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+
+from ops.main import main
+
+from charms.osm.sshproxy import SSHProxyCharm
+from ops.model import (
+    ActiveStatus,
+    MaintenanceStatus,
+)
+
+
+class SshproxyCharm(SSHProxyCharm):
+    def __init__(self, *args):
+        super().__init__(*args)
+
+        # An example of setting charm state
+        # that's persistent across events
+        self.state.set_default(is_started=False)
+
+        if not self.state.is_started:
+            self.state.is_started = True
+
+        # Register all of the events we want to observe
+        # Charm events
+        self.framework.observe(self.on.config_changed, self.on_config_changed)
+        self.framework.observe(self.on.install, self.on_install)
+        self.framework.observe(self.on.start, self.on_start)
+        self.framework.observe(self.on.upgrade_charm, self.on_upgrade_charm)
+        # Charm actions (primitives)
+        self.framework.observe(self.on.touch_action, self.on_touch_action)
+        # OSM actions (primitives)
+        self.framework.observe(self.on.start_action, self.on_start_action)
+        self.framework.observe(self.on.stop_action, self.on_stop_action)
+        self.framework.observe(self.on.restart_action, self.on_restart_action)
+        self.framework.observe(self.on.reboot_action, self.on_reboot_action)
+        self.framework.observe(self.on.upgrade_action, self.on_upgrade_action)
+
+    def on_config_changed(self, event):
+        """Handle changes in configuration"""
+        super().on_config_changed(event)
+
+    def on_install(self, event):
+        super().on_install(event)
+
+    def on_start(self, event):
+        """Called when the charm is being installed"""
+        super().on_start(event)
+
+    def on_upgrade_charm(self, event):
+        """Upgrade the charm."""
+        self.unit.status = MaintenanceStatus("Upgrading charm")
+        # Do upgrade related stuff
+        self.unit.status = ActiveStatus("Active")
+
+    def on_touch_action(self, event):
+        """Touch a file."""
+
+        if self.unit.is_leader():
+            filename = event.params["filename"]
+            proxy = self.get_ssh_proxy()
+            stdout, stderr = proxy.run("touch {}".format(filename))
+            proxy.scp("/etc/lsb-release", "/home/ubuntu/scp_file")
+            event.set_results({"output": stdout})
+        else:
+            event.fail("Unit is not leader")
+            return
+
+    ###############
+    # OSM methods #
+    ###############
+    def on_start_action(self, event):
+        """Start the VNF service on the VM."""
+        pass
+
+    def on_stop_action(self, event):
+        """Stop the VNF service on the VM."""
+        pass
+
+    def on_restart_action(self, event):
+        """Restart the VNF service on the VM."""
+        pass
+
+    def on_reboot_action(self, event):
+        """Reboot the VM."""
+        if self.unit.is_leader():
+            proxy = self.get_ssh_proxy()
+            stdout, stderr = proxy.run("sudo reboot")
+            if len(stderr):
+                event.fail(stderr)
+        else:
+            event.fail("Unit is not leader")
+            return
+
+    def on_upgrade_action(self, event):
+        """Upgrade the VNF service on the VM."""
+        pass
+
+
+if __name__ == "__main__":
+    main(SshproxyCharm)

charm-packages/cmr_no_relation_vnf/charms/ops/sshproxy-operator/tests/test_charm.py

+# Copyright 2020 David Garcia
+# See LICENSE file for licensing details.
+
+import unittest
+from unittest.mock import Mock, call
+
+from ops.testing import Harness
+from charm import SshproxyCharm
+
+
+class TestCharm(unittest.TestCase):
+    @unittest.mock.patch("charms.osm.sshproxy.SSHProxy.run")
+    def test_touch_action(self, mock_ssh_proxy):
+        mock_ssh_proxy.return_value = ("stdout", None)
+        harness = Harness(SshproxyCharm)
+        harness.set_leader(is_leader=True)
+        harness.begin()
+        action_event = Mock(params={"filename": "/home/ubuntu/asd"})
+        harness.charm.on_touch_action(action_event)
+
+        self.assertTrue(action_event.set_results.called)
+        self.assertEqual(
+            action_event.set_results.call_args,
+            call({"output": "stdout"}),
+        )
+
+    def test_touch_action_fail(self):
+        harness = Harness(SshproxyCharm)
+        harness.set_leader(is_leader=False)
+        harness.begin()
+        action_event = Mock(params={"filename": "/home/ubuntu/asd"})
+        harness.charm.on_touch_action(action_event)
+
+        self.assertEqual(action_event.fail.call_args, [("Unit is not leader",)])

charm-packages/cmr_no_relation_vnf/cmr_no_relation_vnfd.yaml

+vnfd:
+  description:
+    A VNF consisting of 1 VDU connected to two external VL, and one for
+    data and another one for management
+  df:
+    - id: default-df
+      instantiation-level:
+        - id: default-instantiation-level
+          vdu-level:
+            - number-of-instances: 1
+              vdu-id: simple_requires
+            - number-of-instances: 1
+              vdu-id: simple_provides
+      vdu-profile:
+        - id: simple_requires
+          min-number-of-instances: 1
+        - id: simple_provides
+          min-number-of-instances: 1
+      lcm-operations-configuration:
+        operate-vnf-op-config:
+          day1-2:
+            - id: cross_model_no_relation-vnf
+              config-access:
+                ssh-access:
+                  default-user: ubuntu
+                  required: true
+              execution-environment-list:
+                - id: simple-provides-proxy-ee
+                  juju:
+                    charm: sshproxy.charm
+                    proxy: true
+                    cloud: k8s
+                  external-connection-point-ref: provides-mgmt-ext
+              initial-config-primitive:
+                - seq: 1
+                  name: config
+                  execution-environment-ref: simple-provides-proxy-ee
+                  parameter:
+                    - name: ssh-hostname
+                      value: <rw_mgmt_ip>
+                    - name: ssh-username
+                      value: ubuntu
+                - seq: 2
+                  name: touch
+                  execution-environment-ref: simple-provides-proxy-ee
+                  parameter:
+                    - data-type: STRING
+                      name: filename
+                      value: /home/ubuntu/first-touch
+              config-primitive:
+                - name: touch
+                  execution-environment-ref: simple-provides-proxy-ee
+                  parameter:
+                    - data-type: STRING
+                      default-value: /home/ubuntu/touched
+                      name: filename
+            - id: simple_requires
+              config-access:
+                ssh-access:
+                  default-user: ubuntu
+                  required: true
+              execution-environment-list:
+                - id: simple-requires-ee
+                  juju:
+                    charm: simple-requires.charm
+                    proxy: false
+                  external-connection-point-ref: requires-mgmt-ext
+              initial-config-primitive:
+                - seq: 1
+                  name: touch
+                  execution-environment-ref: simple-requires-ee
+                  parameter:
+                    - data-type: STRING
+                      name: filename
+                      value: /home/ubuntu/first-touch
+              config-primitive:
+                - name: touch
+                  execution-environment-ref: simple-requires-ee
+                  parameter:
+                    - data-type: STRING
+                      default-value: /home/ubuntu/touched
+                      name: filename
+  ext-cpd:
+    - id: requires-mgmt-ext
+      int-cpd:
+        cpd: simple_requires-eth0-int
+        vdu-id: simple_requires
+    - id: provides-mgmt-ext
+      int-cpd:
+        cpd: simple_provides-eth0-int
+        vdu-id: simple_provides
+  id: cross_model_no_relation-vnf
+  mgmt-cp: provides-mgmt-ext
+  product-name: cross_model_no_relation-vnf
+  sw-image-desc:
+    - id: ubuntu18.04
+      image: ubuntu18.04
+      name: ubuntu18.04
+  vdu:
+    - cloud-init-file: cloud-config.txt
+      id: simple_requires
+      int-cpd:
+        - id: simple_requires-eth0-int
+          virtual-network-interface-requirement:
+            - name: simple_requires-eth0
+              position: 1
+              virtual-interface:
+                type: PARAVIRT
+      name: simple_requires
+      sw-image-desc: ubuntu18.04
+      virtual-compute-desc: simple_requires-compute
+      virtual-storage-desc:
+        - simple_requires-storage
+    - cloud-init-file: cloud-config.txt
+      id: simple_provides
+      int-cpd:
+        - id: simple_provides-eth0-int
+          virtual-network-interface-requirement:
+            - name: simple_provides-eth0
+              position: 1
+              virtual-interface:
+                type: PARAVIRT
+      name: simple_provides
+      sw-image-desc: ubuntu18.04
+      virtual-compute-desc: simple_provides-compute
+      virtual-storage-desc:
+        - simple_provides-storage
+  version: 1.0
+  virtual-compute-desc:
+    - id: simple_requires-compute
+      virtual-cpu:
+        num-virtual-cpu: 1
+      virtual-memory:
+        size: 1.0
+    - id: simple_provides-compute
+      virtual-cpu:
+        num-virtual-cpu: 1
+      virtual-memory:
+        size: 1.0
+  virtual-storage-desc:
+    - id: simple_requires-storage
+      size-of-storage: 10
+    - id: simple_provides-storage
+      size-of-storage: 10

charm-packages/cmr_relation_ns/cmr_relation_nsd.yaml

+nsd:
+  nsd:
+    - description: NS with 2 VNFs with cloudinit connected by datanet and mgmtnet VLs
+      df:
+        - id: default-df
+          vnf-profile:
+            - id: "1"
+              virtual-link-connectivity:
+                - constituent-cpd-id:
+                    - constituent-base-element-id: "1"
+                      constituent-cpd-id: provides-mgmt-ext
+                    - constituent-base-element-id: "1"
+                      constituent-cpd-id: requires-mgmt-ext
+                    - constituent-base-element-id: "1"
+                      constituent-cpd-id: requires-mgmt-kdu-ext
+                  virtual-link-profile-id: mgmtnet
+              vnfd-id: cross_model_relation-vnf
+            - id: "2"
+              virtual-link-connectivity:
+                - constituent-cpd-id:
+                    - constituent-base-element-id: "1"
+                      constituent-cpd-id: provides-mgmt-ext
+                    - constituent-base-element-id: "1"
+                      constituent-cpd-id: requires-mgmt-ext
+                  virtual-link-profile-id: mgmtnet
+              vnfd-id: cross_model_no_relation-vnf
+            - id: "3"
+              virtual-link-connectivity:
+                - constituent-cpd-id:
+                    - constituent-base-element-id: "1"
+                      constituent-cpd-id: provides-mgmt-ext
+                    - constituent-base-element-id: "1"
+                      constituent-cpd-id: requires-mgmt-ext
+                  virtual-link-profile-id: mgmtnet
+              vnfd-id: cross_model_no_relation-vnf
+      id: cross_model_relation-ns
+      name: cross_model_relation-ns
+      version: "1.0"
+      virtual-link-desc:
+        - id: mgmtnet
+          mgmt-network: "true"
+      vnfd-id:
+        - cross_model_relation-vnf
+        - cross_model_no_relation-vnf
+      ns-configuration:
+        relation:
+          - name: relation
+            provider:
+              vnf-profile-id: "2"
+              endpoint: interface
+            requirer:
+              vnf-profile-id: "3"
+              vdu-profile-id: simple_requires
+              endpoint: interface

charm-packages/cmr_relation_vnf/charms/ops/simple_provides_proxy/actions.yaml

+##
+# Copyright 2020 Canonical Ltd.
+# All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+##
+touch:
+  description: "Touch a file on the VNF."
+  params:
+    filename:
+      description: "The name of the file to touch."
+      type: string
+      default: ""
+  required:
+    - filename
+
+# Standard OSM functions
+start:
+  description: "Stop the service on the VNF."
+stop:
+  description: "Stop the service on the VNF."
+restart:
+  description: "Stop the service on the VNF."
+reboot:
+  description: "Reboot the VNF virtual machine."
+upgrade:
+  description: "Upgrade the software on the VNF."
+
+# Required by charms.osm.sshproxy
+run:
+  description: "Run an arbitrary command"
+  params:
+    command:
+      description: "The command to execute."
+      type: string
+      default: ""
+  required:
+    - command
+generate-ssh-key:
+  description: "Generate a new SSH keypair for this unit. This will replace any existing previously generated keypair."
+verify-ssh-credentials:
+  description: "Verify that this unit can authenticate with server specified by ssh-hostname and ssh-username."
+get-ssh-public-key:
+  description: "Get the public SSH key for this unit."

charm-packages/cmr_relation_vnf/charms/ops/simple_provides_proxy/config.yaml

+##
+# Copyright 2020 Canonical Ltd.
+# All rights reserved.
+#
+# Licensed under the Apache License, Version 2.0 (the "License"); you may
+# not use this file except in compliance with the License. You may obtain
+# a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+# WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+# License for the specific language governing permissions and limitations
+# under the License.
+##
+options:
+  ssh-hostname:
+    type: string
+    default: ""
+    description: "The hostname or IP address of the machine to"
+  ssh-username:
+    type: string
+    default: ""
+    description: "The username to login as."
+  ssh-password:
+    type: string
+    default: ""
+    description: "The password used to authenticate."
+  ssh-public-key:
+    type: string
+    default: ""
+    description: "The public key of this unit."
+  ssh-key-type:
+    type: string
+    default: "rsa"
+    description: "The type of encryption to use for the SSH key."
+  ssh-key-bits:
+    type: int
+    default: 4096
+    description: "The number of bits to use for the SSH key."