Trivial fix for minor refactor error for YARN-521

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1503922 13f79535-47bb-0310-9956-ffa450edef68
Merge r1503933 from trunk to branch-2 for YARN-513. Create common proxy client for communicating with RM (Xuan Gong & Jian He via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1503935 13f79535-47bb-0310-9956-ffa450edef68
Merge r1503934 from trunk to branch-2 for MAPREDUCE-5398. MR changes for YARN-513 (Jian He via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1503936 13f79535-47bb-0310-9956-ffa450edef68
YARN-661. Fixed NM to cleanup users' local directories correctly when starting up. Contributed by Omkar Vinit Joshi.
svn merge --ignore-ancestry -c 1503942 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1503943 13f79535-47bb-0310-9956-ffa450edef68
YARN-820. Fixed an invalid state transition in NodeManager caused by failing resource localization. Contributed by Mayank Bansal.
svn merge --ignore-ancestry -c 1503947 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1503948 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1477344 to branch-2 to fix HDFS-4687.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1503952 13f79535-47bb-0310-9956-ffa450edef68
svn merge -c 1503954 FIXES: HADOOP-9734. Common protobuf definitions for GetUserMappingsProtocol, RefreshAuthorizationPolicyProtocol and RefreshUserMappingsProtocol. Contributed by Jason Lowe


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1503955 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-2' into branch-2-gd