YARN-910. Augmented auxiliary services to listen for container starts and completions in addition to application events. Contributed by Alejandro Abdelnur.
svn merge --ignore-ancestry -c 1521298 ../../trunk/


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1521299 13f79535-47bb-0310-9956-ffa450edef68