Changes

Summary

1. more fixes as reported from plu2020 (details)

Commit 6b3faf6ee6b5ccc9b7526b7a6a5c440df8f5ed89 by michele.carignani more fixes as reported from plu2020
	SOL003/VNFLifecycleManagement-API/schemas/subscriptions.schema.json
	SOL003/VNFLifecycleManagement-API/TerminateVNFTask.robot
	SOL003/VNFLifecycleManagement-API/VnfLcmOperationOccurences.robot
	SOL003/VNFLifecycleManagement-API/Subscriptions.robot
	SOL003/VNFLifecycleManagement-API/NotificationEndpoint.robot