CBQE-0 enable SASL bucket tests

Change-Id: Id362087f9b21dba42ec2ba3577f43dae5e2d2969
Reviewed-on: http://review.couchbase.org/35484
Tested-by: buildbot <build@couchbase.com>
Reviewed-by: Ketaki Gangal <ketakigangal@gmail.com>