CBQE-1531: add cluster ops tests for query tool

Change-Id: If99f19e783a9aa592e14e4e3f1fbdade9ef3cc0f
Reviewed-on: http://review.couchbase.org/29333
Reviewed-by: Ketaki Gangal <ketakigangal@gmail.com>
Tested-by: Iryna Mironava <irynamironava@yandex.ru>