HIVE-8901 : increase retry attempt, interval on metastore database errors (Thejas Nair, reviewed by Vaibhav Gumashta)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1640463 13f79535-47bb-0310-9956-ffa450edef68
HIVE-8435 : Add identity project remover optimization (Jesús Camacho Rodríguez via Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1640577 13f79535-47bb-0310-9956-ffa450edef68