AMBARI-2282. Custom config properties cannot be added in Customize Services step. (yusaku)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/trunk@1489674 13f79535-47bb-0310-9956-ffa450edef68
AMBARI-2267. During registrations, ambari server does not properly handle empty version numbers from agent. (smohanty)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/trunk@1489681 13f79535-47bb-0310-9956-ffa450edef68