LU-2183 quota: update tests for DNE

Update test_13 of sq since the osp is changed to lwp in DNE.

Signed-off-by: Niu Yawei <yawei.niu@intel.com>
Change-Id: I002bc6e3377ff578767e03657b32abf02f9562d5
Reviewed-on: http://review.whamcloud.com/5241
Tested-by: Hudson
Tested-by: Maloo <whamcloud.maloo@gmail.com>
Reviewed-by: wangdi <di.wang@intel.com>
Reviewed-by: Johann Lombardi <johann.lombardi@intel.com>