[usecase-wrt][XWALK-2058]Add remote debuggting to usercase

[Detailed commit message (if have)]
Impacted TCs num(approved): New 1, update 0, deleted 0
Unit test platform: [tizen]
Unit test result summary: Pass 1, Fail , Blocked 0
Merge pull request #804 from linshen/shen/misc/wrt-usecase

[usecase-wrt][XWALK-2058]Add remote debuggting to usercase