[wrt]update test site to http://english.sina.com

[Detailed commit message (if have)]
Impacted TCs num(approved): New 0, update 1, deleted  1
Unit test platform: [tizen]
Unit test result summary: Pass 1 , Fail 0, Blocked  0
[wrt] update wrt-webfeature-tizen-tests update xwalk command

[Detailed commit message]
Impacted TCs num(approved): New 0, update 1, deleted 0
Unit test platform: [tizen]
Unit test result summary: Pass 1 , Fail 0, Blocked 0
[wrt][XWALK-890] Update test host and seed file

[Detailed commit message (if have)]
Unit test platform: [tizen]
Unit test result summary: Pass 397  , Fail 0, Blocked  0
[misc] Add 1 TCs to wrt-usecase-tizen-tests
[wrt]update xwalk web/audio to xwalk-launcher

Detailed commit message (if have)]
Impacted TCs num(approved): New 0, update 4, deleted 0
Unit test platform: [tizen]
Unit test result summary: Pass 4 , Fail  0, Blocked 0
Merge pull request #437 from linshen/update-wrt-manifest-tizen-tests

[wrt][XWALK-890] Update test host and seed file
Merge pull request #438 from linshen/update-googlesite

[wrt]update test site to http://english.sina.com
Merge pull request #440 from wanghongjuan/wanghongjuan/misc/usecase-tizen

[misc] Add 1 TCs to wrt-usecase-tizen-tests
Merge pull request #439 from linshen/update-xwalk-listfeat

[wrt] update wrt-webfeature-tizen-tests update xwalk command
Merge pull request #441 from linshen/update-xwalk-co

[wrt]update xwalk web/audio to xwalk-launcher