YARN-1333. Support blacklisting in the Fair Scheduler (Tsuyoshi Ozawa via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1535899 13f79535-47bb-0310-9956-ffa450edef68
YARN-1333: Add missing file SchedulerAppUtils

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1535900 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-HADOOP-7435-trunk-gd