CBQE-2125 update printout (assertion) when exe CLI

Change-Id: Ib46ee7d08c5cf442a07f5f3af7fd5b36dd699688
Reviewed-on: http://review.couchbase.org/36168
Tested-by: Thuan Nguyen <soccon@gmail.com>
Reviewed-by: Tommie McAfee <tommie@couchbase.com>