Merge r1615469 from trunk: YARN-2370. Fix comment in o.a.h.y.server.resourcemanager.schedulerAppSchedulingInfo (Contributed by Wenwu Peng)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1615471 13f79535-47bb-0310-9956-ffa450edef68