HIVE-7985: With CBO enabled cross product is generated when a subquery is present (Laljo John Pullokkaran, reviewed by Ashutosh Chauhan)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.14@1633734 13f79535-47bb-0310-9956-ffa450edef68