SENTRY-455: Fixed Unit Tests: TestDbOperations#testIndexTable ( Dapeng Sun via Sravya Tirukkovalur)
SENTRY-444: Update the schema upgrade scripts per the grantor principal changes (Sravya Tirukkovalur via Prasad Mujumdar)
SENTRY-456-Service-discovery-for-SENTRY-high-availab
SENTRY-463-Refactor-SentryServiceClientFactory-chang
SENTRY-464 Add-HASentryPolicyServiceClientImpl-for-high-availab
SENTRY-457-Global-Sequence-ID-support-for-SENTRY-hig
SENTRY-458-Enable-optimistic-locking-for-SENTRY-high
SENTRY-459-Security-mode-Kerberos-support-for-SENTRY
SENTRY-460 Upgrade SQL scripts for SENTRY high availability
SENTRY-465 for test