Changes

Summary

1. NS descriptor checks added in NSDManagement-API (details)

Commit 2491c817919b68e2019f8bb5d91f8923d0fe32ed by zafar NS descriptor checks added in NSDManagement-API
	SOL005/NSDManagement-API/NotificationConsumer.robot
	SOL005/NSDManagement-API/environment/variables.txt
	SOL005/NSDManagement-API/NSDescriptors.robot
	SOL005/NSDManagement-API/descriptors/SOL006/reference_tst010_nsd_simple_a_b_SOL006.yaml
	SOL005/NSDManagement-API/jsons/notifications/NsdChangeNotification.json
	SOL005/NSDManagement-API/jsons/subscriptions.json
	SOL005/NSDManagement-API/jsons/notifications/NsdDeletionNotification.json
	SOL005/NSDManagement-API/descriptors/SOL001/reference_tst010_nsd_simple_a_b_SOL001.yaml
	SOL005/NSDManagement-API/jsons/notifications/NsdOnBoardingFailureNotification.json
	SOL005/NSDManagement-API/IndividualNSDescriptor.robot
	SOL005/NSDManagement-API/jsons/notifications/NsdOnBoardingNotification.json
	SOL005/NSDManagement-API/NSDManagementKeywords.robot
	SOL005/NSDManagement-API/IndividualSubscription.robot