add native charm for centos

Signed-off-by: endika endika.aldecoa@ehu.eus

charm-packages/native_charm_centos_vnf/native_charm_centos_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: mgmtVM
+    vdu-profile:
+    - id: mgmtVM
+      min-number-of-instances: 1
+    lcm-operations-configuration:
+      operate-vnf-op-config:
+        day1-2:
+        - config-access:
+            ssh-access:
+              default-user: centos
+              required: true
+          config-primitive:
+          - name: touch
+            execution-environment-ref: simple-ee
+            parameter:
+            - data-type: STRING
+              default-value: /home/centos/touched
+              name: filename
+          id: mgmtVM
+          execution-environment-list:
+          - id: simple-ee
+            juju:
+              charm: simple
+              proxy: false
+          initial-config-primitive:
+          - name: touch
+            execution-environment-ref: simple-ee
+            parameter:
+            - data-type: STRING
+              name: filename
+              value: /home/centos/first-touch
+            seq: 1
+  ext-cpd:
+  - id: vnf-mgmt-ext
+    int-cpd:
+      cpd: mgmtVM-eth0-int
+      vdu-id: mgmtVM
+  id: native_charm_centos-vnf
+  mgmt-cp: vnf-mgmt-ext
+  product-name: native_charm_centos-vnf
+  sw-image-desc:
+  - id: centos7
+    image: centos7
+    name: centos7
+  vdu:
+  - cloud-init-file: cloud-config.txt
+    id: mgmtVM
+    int-cpd:
+    - id: mgmtVM-eth0-int
+      virtual-network-interface-requirement:
+      - name: mgmtVM-eth0
+        position: 1
+        virtual-interface:
+          type: PARAVIRT
+    name: mgmtVM
+    sw-image-desc: centos7
+    virtual-compute-desc: mgmtVM-compute
+    virtual-storage-desc:
+    - mgmtVM-storage
+  version: 1.0
+  virtual-compute-desc:
+  - id: mgmtVM-compute
+    virtual-cpu:
+      num-virtual-cpu: 1
+    virtual-memory:
+      size: 1.0
+  virtual-storage-desc:
+  - id: mgmtVM-storage
+    size-of-storage: 10