YARN-2647. Added a queue CLI for getting queue information. Contributed by Sunil Govind.

(cherry picked from commit 61effcbebc819ee1bd3d60f5444c39c972494a32)

Conflicts:
	hadoop-yarn-project/hadoop-yarn/bin/yarn

(cherry picked from commit b1521c7c3ce7dfaabdb3fc1d74c10970dda57fe5)