CBQE-0 :: fix test failure in start stop tests

Change-Id: Id0980a9023dfc66cee6a63c694e30c558a97ed0c
Reviewed-on: http://review.couchbase.org/39932
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Parag Agarwal <agarwal.parag@gmail.com>
Tested-by: Parag Agarwal <agarwal.parag@gmail.com>