Fixing CHANGES.txt in hdfs

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1506560 13f79535-47bb-0310-9956-ffa450edef68
YARN-968. RM admin commands don't work. Contributed by Vinod Kumar Vavilapalli.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1506675 13f79535-47bb-0310-9956-ffa450edef68