YARN-635. Renamed YarnRemoteException to YarnException. Contributed by Siddharth Seth.
MAPREDUCE-5301. Updated MR code to work with YARN-635 changes of renaming YarnRemoteException to YarnException. Contributed by Siddharth Seth.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1489288 13f79535-47bb-0310-9956-ffa450edef68