merge -r 1439652:1439653 Merging YARN-133

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1439655 13f79535-47bb-0310-9956-ffa450edef68
merge MAPREDUCE-4838 from trunk. Add additional fields like Locality, Avataar to the JobHistory logs. Contributed by Zhijie Shen


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1439715 13f79535-47bb-0310-9956-ffa450edef68