merge -c 1501599 from trunk to branch-2 to fix YARN-727, MAPREDUCE-5325. ClientRMProtocol.getAllApplications should accept ApplicationType as a parameter. Contributed by Xuan Gong.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1501600 13f79535-47bb-0310-9956-ffa450edef68
Merge r1501605 from trunk to branch-2 for YARN-369. Handle ( or throw a proper error when receiving) status updates from application masters that have not registered (Mayank Bansal & Abhishek Kapoor via bikas)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1501606 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-2' into branch-2-gd
Merge remote branch 'origin/branch-2-gd' into fb-HADOOP-7435-TEST-branch-2-gd