YARN-532. Change RMAdmin and Localization client protocol PB implementations to implement closeable so that they can be stopped when needed via RPC.stopProxy(). Contributed by Siddharth Seth.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1464788 13f79535-47bb-0310-9956-ffa450edef68