Move YARN-1284 from 2.3 to 2.2.1 in CHANGES.txt

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1531424 13f79535-47bb-0310-9956-ffa450edef68
YARN-1300. SLS tests fail because conf puts YARN properties in fair-scheduler.xml (Ted Yu via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1531427 13f79535-47bb-0310-9956-ffa450edef68
HDFS-5322. Merge change r1531436 from trunk.

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1531440 13f79535-47bb-0310-9956-ffa450edef68
YARN-1044. used/min/max resources do not display info in the scheduler page (Sangjin Lee via Sandy Ryza)

git-svn-id: https://svn.apache.org/repos/asf/hadoop/common/branches/branch-2@1531449 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/branch-2' into branch-2-gd
Merge remote branch 'origin/branch-2-gd' into fb-MAPREDUCE-4884-branch-2-gd