AMBARI-3201. Ambari-Client code updates. (Andrew via mahadev)
AMBARI-3244. Ambari Client improve errors handling. (Andrew vi mahadev)
AMBARI-3210. Exception in each log of monitorable component if ganglia is not installed( odiachenko)
AMBARI-3230. NameNode HA wizard (rollback): Wrong size of progress bar
AMBARI-3249. NameNode HA Wizard: UI tweaks
AMBARI-3158. Ambari Hadoop: Job Summary Log should be configured to log as separate file(Dmytro Shkvyra via odiachenko)