HIVE-8096 - Fix a few small nits in TestExtendedAcls (Brock reviewed by Szehon)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1626381 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8100 - Add QTEST_LEAVE_FILES to QTestUtil (Brock reviewed by Szehon)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1626382 13f79535-47bb-0310-9956-ffa450edef68