SOL005 NSD 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 NSD Management Interface.

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

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

Review period elapsed: Approved !!

SOL005/NSDManagement-API/NSDManagementKeywords.robot

@@ -10,8 +10,8 @@ Library    JSONSchemaLibrary    schemas/
 Library    RequestsLibrary
 Library    Process
 Library    String
-Variables  descriptors/SOL006/NSD/nsd_SOL006.yaml
-Variables  descriptors/SOL001/NSD/nsd_SOL001.yaml
+#Variables  descriptors/SOL006/NSD/nsd_SOL006.yaml
+#Variables  descriptors/SOL001/NSD/nsd_SOL001.yaml
 
 *** Keywords ***
 GET all Network Service Descriptors Information
@@ -1532,6 +1532,7 @@ PARSE the NS Descriptor File
     Run Keyword If  '${descriptorType}'=='SOL001'    Fetch Information from SOL001 NS descriptor file    ELSE    Fetch Information from SOL006 NS descriptor file
 
 Fetch Information from SOL001 NS descriptor file
+    Import Variables    ${CURDIR}/descriptors/SOL001/NSD/nsd_SOL001.yaml
     ${ns_descriptor_id}=    Get Variable Value    ${topology_template.node_templates.properties.descriptorId}
     ${designer}=    Get Variable Value    ${topology_template.node_templates.properties.designer}
     ${version}=    Get Variable Value    ${topology_template.node_templates.properties.version}
@@ -1545,6 +1546,7 @@ Fetch Information from SOL001 NS descriptor file
     Set Global Variable    ${NS_InvariantID}    ${invariantId}
 
 Fetch Information from SOL006 NS descriptor file
+    Import Variables    ${CURDIR}/descriptors/SOL006/NSD/nsd_SOL006.yaml
     ${nsd_id}=    Get Variable Value    ${nfv.nsd[0].id}
     Set Global Variable    ${NS_DescriptorID}    ${nsd_id}