YARN-1273. Fixed Distributed-shell to account for containers that failed to start. Contributed by Hitesh Shah.
svn merge --ignore-ancestry -c 1529389 ../../trunk


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1529390 13f79535-47bb-0310-9956-ffa450edef68