YARN-777. Removed unreferenced objects from .proto files. Contributed by Jian He.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1490882 13f79535-47bb-0310-9956-ffa450edef68
YARN-642. Removed health parameter from ResourceManager /nodes web-service and cleaned the behaviour of the status parameter. Contributed by Sandy Ryza.


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/trunk@1490890 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd
Merge remote branch 'origin/trunk-gd' into fb-YAHOO-253-trunk-gd