AMBARI-2255. Ambari failes to start after upgrading from 1.2.3 to 1.2.4. (Myroslav Papirkovskyy via smohanty)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/branches/branch-1.2.4@1489582 13f79535-47bb-0310-9956-ffa450edef68