Move HDFS-5283 to section branch-2.3.0

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1550032 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5580. Fix infinite loop in Balancer.waitForMoveCompletion. (Binglin Chang via junping_du)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1550074 13f79535-47bb-0310-9956-ffa450edef68
YARN-1481. Move internal services logic from AdminService to ResourceManager. (vinodkv via kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1550167 13f79535-47bb-0310-9956-ffa450edef68
Merge remote-tracking branch: upstream/trunk