YARN-1392. Allow sophisticated app-to-queue placement policies in the Fair Scheduler (Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1542105 13f79535-47bb-0310-9956-ffa450edef68
YARN-1392: Add new files

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1542106 13f79535-47bb-0310-9956-ffa450edef68