SOL002 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 SOL002 VNF LCM Interface.

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

**Deadline for review: Wednesday 3rd March 2021 @6pm CET

Review period elapsed: approved**

added MR ready to review label

added 1 commit

• befec56f - minor bugs resolved

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added 1 commit

• fe4d232f - corrected test ID and updated template variable for CreateVnfSnapshotInfoRequest.json

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added 1 commit

• 67d166ae - updated importing variables for descriptors

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added 1 commit

• b918e0e2 - minor fix in documentation

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changed the description

added MR ready to be merged label and removed MR ready to review label

added 12 commits

• b918e0e2...4eaee9be - 5 commits from branch 3.3.1-dev
• 2d904b18 - implementing deltas for 3.3.1
• 8a02ccc3 - added new resources and updated references
• 12587b40 - updated JSONs and schemas according to deltas
• 293a2127 - minor bugs resolved
• ad1b2ff2 - corrected test ID and updated template variable for CreateVnfSnapshotInfoRequest.json
• 52911bf0 - updated importing variables for descriptors
• 64074d5d - minor fix in documentation

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merged

mentioned in commit d294e870