YARN-1666. Modified RM HA handling of include/exclude node-lists to be available across RM failover by making using of a remote configuration-provider. Contributed by Xuan Gong.
svn merge --ignore-ancestry -c 1569856 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1569857 13f79535-47bb-0310-9956-ffa450edef68