Update MetadataRepositoryLifecycleManagerTest.java

PPP-3167 - Securing Admin only REST Service
Update FileResourceTest.java

PPP-3167 - securing admin only REST services
Update RepositoryResourceTest.java

PPP-3167 securing admin only REST services
Update MetadataRepositoryLifecycleManagerTest.java

PPP-3167 - Securing Admin only REST services
Merge pull request #860 from rmansoor/master

PPP-3167 Securing Admin only REST services