YARN-651. Changed PBClientImpls of ContainerManager and RMAdmin to throw IOExceptions also. Contributed by Xuan Gong.
svn merge --ignore-ancestry -c 1480154 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1480155 13f79535-47bb-0310-9956-ffa450edef68