MAPREDUCE-5152. Make MR App to simply pass through the container from RM instead of extracting and populating information itself to start any container. Contributed by Vinod Kumar Vavilapalli.
svn merge --ignore-ancestry -c 1469544 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1469545 13f79535-47bb-0310-9956-ffa450edef68