SOL005 NS Lifecycle Management - Implementation of deltas between v3.3.1 and v2.7.1

This merge request refers to the implementation of deltas between v3.3.1 and v2.7.1 of SOL005 NS Lifecycle Management Interface.

@lynchpi @aelken @matsuurat @carignani @sayama @kraja @zulfiqar @zafar

Deadline for review: Thursday 18th March 2021 @6pm CET

Review period elapsed: Approved !!

SOL005/NSLifecycleManagement-API/environment/variables.txt

@@ -77,6 +77,16 @@ ${NEG_FILTER}    attribute_not_exist=some_value
 ${NEG_SELECTOR}    fields=wrong_field
 ${json}    {"notificationStatus": ""}
 
+${POS_FILTER_snapshot}     id=41fdd38a-3d4c-465c-83e0-f80e014425f8   # Positive case, suing compiant fields name for filtering get request
+${NEG_FILTER_snapshot}     nfvId=41fdd38a-3d4c-465c-83e0-f80e014425f8    # Negative case, using wrong name of field
+${fields_snapshot}    vnfSnapshot
+
+${vnfSnapshotInfoId}
+${vnfSnapshotInfoId_InUse}    snapshotId-of-a-resource-AlreadyInUse-bySomeOther-operation
+${invalidVnfSnapshotInfoId}    invalid-or-nonexistent-vnfSnapshotInforId    
+
+${PAGING_SUPPORTED}    1
+
 ${callbackResp}    127.0.0.1
 
 ${check_descriptors}    1