[webapi][XWALK-2277] Fix the bug that fail to found TC when running sso

Impacted tests(approved): New 0, Update 23, Delete 0
Unit test platform: [Tizen IVI]
Unit test result summary: Pass 0, Fail 23, Block 0
Merge pull request #745 from minxhuang/hm/webapi/xwalk-2277

[webapi][XWALK-2277] Fix the bug that fail to found TC when running sso