new a package with several vdu replicas

One vdu contains count=2 (two instnaces), the same for the scaling
It includes forcing IP address and mac address
It includes cloud init parsing OSM variable jinja2 example
Signed-off-by: tierno <alfonso.tiernosepulveda@telefonica.com>

vdu_replicas_ns/vdu_replicas_nsd.yaml

+nsd-catalog:
+    nsd:
+    -   id: vdu-replicas-ns
+        name: vdu-replicas-ns
+        short-name: vdu-replicas-ns
+        description: NS with 2 VNFs connected by datanet and mgmtnet VLs
+        version: '1.0'
+        logo: osm.png
+        constituent-vnfd:
+        -   vnfd-id-ref: vdu-replicas-vnf
+            member-vnf-index: 'vnf1'
+        -   vnfd-id-ref: vdu-replicas-vnf
+            member-vnf-index: 'vnf2'
+        vld:
+        -   id: mgmtnet
+            name: mgmtnet
+            short-name: mgmtnet
+            type: ELAN
+            mgmt-network: true
+            vnfd-connection-point-ref:
+            -   vnfd-id-ref: vdu-replicas-vnf
+                member-vnf-index-ref: 'vnf1'
+                vnfd-connection-point-ref: vnf-mgmt
+            -   vnfd-id-ref: vdu-replicas-vnf
+                member-vnf-index-ref: 'vnf2'
+                vnfd-connection-point-ref: vnf-mgmt
+        -   id: datanet
+            name: datanet
+            short-name: datanet
+            type: ELAN
+            vnfd-connection-point-ref:
+            -   vnfd-id-ref: vdu-replicas-vnf
+                member-vnf-index-ref: 'vnf1'
+                vnfd-connection-point-ref: vnf-data
+            -   vnfd-id-ref: vdu-replicas-vnf
+                member-vnf-index-ref: 'vnf2'
+                vnfd-connection-point-ref: vnf-data
+

vdu_replicas_vnf/cloud_init/cloud-config.txt

+#cloud-config
+password: osm4u
+chpasswd: { expire: False }
+ssh_pwauth: True
+
+write_files:
+-   content: |
+        # Example of jinja2 template for parsing OSM variables
+
+        I am vdu_id='{{ OSM.vdu_id }}' count_index='{{ OSM.count_index }}' ip_address='{{ OSM.ip_address|default('not set') }}'
+        Parameters:
+         ns_id: {{ OSM.ns_id }}
+         vnf_id: {{ OSM.vnf_id }}
+         member_vnf_index: {{ OSM.member_vnf_index }}
+         list of vdus:{% for vdu_id_index,vdu in OSM.vdu.items() %}
+          vdu {{ vdu_id_index }}:
+            vdu_id: {{ vdu.vdu_id }}
+            count_index: {{ vdu.count_index }}
+            ip_address: {{ vdu.ip_address|default('not set') }}
+            interfaces:{% for iface_id,iface in vdu.interfaces.items() %}
+              iface='{{ iface_id }}' ip_address='{{ iface.ip_address|default('no ip') }} mac_adress={{ iface.mac_address|default('no mac') }}'{% endfor %}
+        {% endfor %}
+
+        global variable OSM:
+        """{{ OSM|default('OSM variable is not defined') }}"""
+
+    owner: ubuntu:ubuntu
+    permissions: '0644'
+    path: /home/ubuntu/helloworld.txt
+

vdu_replicas_vnf/vdu_replicas_vnfd.yaml

+vnfd-catalog:
+    vnfd:
+    -   id: vdu-replicas-vnf
+        name: vdu-replicas-vnf
+        short-name: vdu-replicas-vnf
+        version: '1.0'
+        description: A VNF with 2 replicas of vdu, internal vld and scaling
+        logo: osm.png
+        connection-point:
+        -   name: vnf-mgmt
+        -   name: vnf-data
+        mgmt-interface:
+            cp: vnf-mgmt
+        internal-vld:
+        -   id: internal
+            name: internal
+            type: ELAN
+            internal-connection-point:
+            -   id-ref: mgmtVM-internal
+            -   id-ref: dataVM-internal
+        -   id: interdata
+            name: interdata
+            type: ELAN
+            ip-profile-ref: interdataip
+            internal-connection-point:
+            -   id-ref: dataVM-interdata
+                ip-address: 192.168.101.20
+        ip-profiles:
+        - name: interdataip
+          description: internal data 
+          ip-profile-params:
+            ip-version: ipv4
+            subnet-address: 192.168.101.0/24
+            dhcp-params:
+              enabled: false
+        vdu:
+        -   id: mgmtVM
+            name: mgmtVM
+            image: ubuntu18.04
+            count: 1
+            vm-flavor:
+                vcpu-count: 1
+                memory-mb: 2048
+                storage-gb: 10
+            interface:
+            -   name: mgmtVM-eth0
+                position: 1
+                type: EXTERNAL
+                virtual-interface:
+                    type: PARAVIRT
+                external-connection-point-ref: vnf-mgmt
+            -   name: mgmtVM-eth1
+                position: 2
+                type: INTERNAL
+                virtual-interface:
+                    type: PARAVIRT
+                internal-connection-point-ref: mgmtVM-internal
+            internal-connection-point:
+            -   id: mgmtVM-internal
+            cloud-init-file: cloud-config.txt
+        -   id: dataVM
+            name: dataVM
+            image: ubuntu18.04
+            count: 2
+            vm-flavor:
+                vcpu-count: 1
+                memory-mb: 2048
+                storage-gb: 10
+            interface:
+            -   name: dataVM-eth0
+                position: 1
+                type: INTERNAL
+                virtual-interface:
+                    type: PARAVIRT
+                internal-connection-point-ref: dataVM-internal
+                mgmt-interface: True
+            -   name: dataVM-eth1
+                position: 2
+                type: INTERNAL
+                virtual-interface:
+                    type: PARAVIRT
+                internal-connection-point-ref: dataVM-interdata
+                mac-address: "00:11:22:33:aa:20"
+            -   name: dataVM-xe0
+                position: 3
+                type: EXTERNAL
+                virtual-interface:
+                    type: PARAVIRT
+                external-connection-point-ref: vnf-data
+            internal-connection-point:
+            -   id: dataVM-internal
+            -   id: dataVM-interdata
+            cloud-init-file: cloud-config.txt
+
+        scaling-group-descriptor:
+        -   max-instance-count: 10
+            name: scale_dataVM
+            vdu:
+            -   count: 2
+                vdu-id-ref: dataVM
+
+        vnf-configuration:
+            config-access:
+                ssh-access:
+                    default-user: ubuntu
+                    required: true