YARN-1757. NM Recovery. Auxiliary service support. (Jason Lowe via kasha)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1585784 13f79535-47bb-0310-9956-ffa450edef68
HDFS-6169. Merge r1585802 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1585804 13f79535-47bb-0310-9956-ffa450edef68