HIVE-8611: grant/revoke syntax should support additional objects for authorization plugins (Prasad Mujumdar, reviewed by Brock Noland)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1638001 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8612: Support metadata result filter hooks (Prasad Mujumdar, reviewed by Brock Noland)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1638004 13f79535-47bb-0310-9956-ffa450edef68