SENTRY-525: Fix TestHDFSIntegration test failure
SENTRY-529: Test]org.apache.sentry.tests.e2e.hdfs.TestHDFSIntegrationtestEnd2End test fails after SENTRY-74 (Dapeng Sun via Prasad Mujumdar)
SENTRY-456-Service-discovery-for-SENTRY-high-availab
SENTRY-463-Refactor-SentryServiceClientFactory-chang
SENTRY-464-Add-HASentryPolicyServiceClientImpl-for-h
SENTRY-459-Security-mode-Kerberos-support-for-SENTRY
SENTRY-457: Global Sequence ID support for SENTRY high availability
SENTRY-458: Enable optimistic locking for SENTRY high availability