AMBARI-1586. Upgrade of Ambari DB on upgrade to 1.2.2 should restore/keep the configuration data for MAPREDUCE. (Sumit Mohanty via swagle)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/trunk@1454564 13f79535-47bb-0310-9956-ffa450edef68