HIVE-6573 : Oracle metastore doesnt come up when hive.cluster.delegation.token.store.class is set to DBTokenStore (Ashutosh Chauhan via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1575481 13f79535-47bb-0310-9956-ffa450edef68