CBQE-0 add cli commands to testconstants

Change-Id: If226127bfa9ba0e93ac974c85c903b19edcd94b2
Reviewed-on: http://review.couchbase.org/36430
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Iryna Mironava <irynamironava@yandex.ru>