[wrt] update 2 tcs for wrt-integration-tizen-test

Impacted TCs num(approved): New 2, update 0,delete 0
Unit test platform: [tizen]
Unit test result summary: Pass 1 , Fail 1, Blocked  0
Crosswalk_WebApp_Update_StopService.html is Fail , webapp can not update
Merge pull request #405 from linshen/update-integration-tize-test

[wrt]][XWALK-2028]update 2 tcs for wrt-integration-tizen-test