[behavior][XWALK-3119] Remove 2 subcases for CSP in behavior

- Due to tinyweb dose not support access origin now, remove related subcases firstly.

Impacted TCs num: New 0, Update 0, Delete 2
Unit test Platform: [Tizen-IVI]
Unit test result summary: Pass 0, Fail 0, Blocked 0
Merge pull request #1525 from JianfengXu/csp/3119

[behavior][XWALK-3119] Remove 2 subcases for CSP in behavior
[webapi][xwalk-3179] Revise timeout to 5000 from 500

- Change timeout to 5000, too short timeout will make test fail

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 1, fail 0, block 0
Merge pull request #1526 from haoxli/webapi/xwalk-3179-2

[webapi][xwalk-3179] Revise timeout to 5000 from 500
[usecase] Update usecase for Vehicle API

Impacted tests(approved): new 0, update 1, delete 0
Unit test platform: [IVI]
Unit test result summary: pass 0, fail 1, block 0
Merge pull request #1528 from kangxu/webapi/usecase/Vehicle/update

[usecase] Update usecase for Vehicle API
[webapi] Change 2 cases from manual to auto for webgl

- These two case can be performed automatically, so change the execution type to auto.

Impacted TCs num(approved): New 0, Update 2, Delete 0
Unit test Platform: [Tizen-IVI]
Unit test result summary: Pass 2, Fail 0, Blocked 0
[webapi][XWALK-3212] Remove this w3c test including idlharness

- Remove w3c mediastreamtrack-init-manual.html, since this is idlharness test
[usecase-wrt][xwakl-2970] Add one case to remotedebugging

Impacted TCs num(approved): New 1, Update 0, Delete 0
Unit test Platform: Android
Android test result summary: Pass 0, Fail 1, Block 0

- Fail bug: xwalk-3168
Merge pull request #1534 from wanghongjuan/usecase/xwalk-2970

[usecase-wrt][xwakl-2970] Add one case to remotedebugging
Merge pull request #1530 from JianfengXu/webgl/automation

[webapi] Change 2 cases from manual to auto for webgl
Merge pull request #1531 from xinliux/webapi/gumallow/XWALK-3212

[webapi][XWALK-3212] Remove this w3c test including idlharness