This patch fixes these problems about metadata:
- vnfcResourceInfo[].metadata.server_notification
value is not stored in LCM operations.
- instantiatedVnfInfo.metadata.ServerNotifierFaultID
value should be a list, not a string.
Closes-Bug: #2004097
Change-Id: I06ea7ced6d9a33c067be3e24ab2c4163bef3574c