New packages for FAIL01 test

Packages needed by new robot test FAIL01: NS with a single VNF consisting of 2 VDUs connected to an internal VL.

simple_2vm_ns/simple_2vm_nsd.yaml

+nsd:
+  nsd:
+  - description: NS with 1 VNFs connected by mgmtnet VL
+    df:
+    - id: default-df
+      vnf-profile:
+      - id: '1'
+        virtual-link-connectivity:
+        - constituent-cpd-id:
+          - constituent-base-element-id: '1'
+            constituent-cpd-id: vnf-mgmt-ext
+          virtual-link-profile-id: mgmtnet
+        vnfd-id: simple_2vm-vnf
+    id: simple_2vm-ns
+    name: simple_2vm-ns
+    version: '1.0'
+    virtual-link-desc:
+    - id: mgmtnet
+      mgmt-network: true
+    vnfd-id:
+    - simple_2vm-vnf