HIVE-7758 - PTest2 separates test files with spaces while QTestGen uses commas [Spark Branch]

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1618431 13f79535-47bb-0310-9956-ffa450edef68
HIVE-7749 - Enable timestamp.* tests (Brock reviewed by Szehon)[Spark Branch]

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/spark@1618443 13f79535-47bb-0310-9956-ffa450edef68