SOL003 VNF 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 SOL003 VNF Lifecycle Management Interface.

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

Deadline for review: Friday 12th March 2021 @6pm CET

Review period elapsed: approved !

SOL003/VNFLifecycleManagement-API/VnfLcmMntOperationKeywords.robot

@@ -1971,7 +1971,7 @@ DELETE individual VNF Snapshot
     Set Headers  {"Accept":"${ACCEPT}"}  
     Set Headers  {"Content-Type": "${CONTENT_TYPE}"}
     Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"${AUTHORIZATION_HEADER}":"${AUTHORIZATION_TOKEN}"}
-    Patch    ${apiRoot}/${apiName}/${apiMajorVersion}/vnf_snapshots/${vnfSnapshotInfoId} 		
+    Delete    ${apiRoot}/${apiName}/${apiMajorVersion}/vnf_snapshots/${vnfSnapshotInfoId} 		
     ${outputResponse}=    Output    response
 	Set Global Variable    ${response}    ${outputResponse} 
 
@@ -1980,7 +1980,7 @@ DELETE individual VNF Snapshot - CONFLICT
     Set Headers  {"Accept":"${ACCEPT}"}  
     Set Headers  {"Content-Type": "${CONTENT_TYPE}"}
     Run Keyword If    ${AUTH_USAGE} == 1    Set Headers    {"${AUTHORIZATION_HEADER}":"${AUTHORIZATION_TOKEN}"}
-    Patch    ${apiRoot}/${apiName}/${apiMajorVersion}/vnf_snapshots/${vnfSnapshotInfoId_InUse} 		
+    Delete    ${apiRoot}/${apiName}/${apiMajorVersion}/vnf_snapshots/${vnfSnapshotInfoId_InUse} 		
     ${outputResponse}=    Output    response
 	Set Global Variable    ${response}    ${outputResponse}