Reverting bad commit OOZIE-1499

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1520828 13f79535-47bb-0310-9956-ffa450edef68
OOZIE-1499 Update only necessary columns and consolidate JPA Executors (ryota)

git-svn-id: https://svn.apache.org/repos/asf/oozie/trunk@1520829 13f79535-47bb-0310-9956-ffa450edef68