YARN-1555. Fixed test failures in applicationhistoryservice.* (Vinod Kumar Vavilapalli via mayank)
svn merge --ignore-ancestry -c 1556753 ../YARN-321


git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1562207 13f79535-47bb-0310-9956-ffa450edef68