[webapi][XWALK-1735] Refine and automate a test for W3C Notification

- Tizen IVI doesn't support W3C Notification
- It supports Tizen Notification?

Impacted tests (approved): new 0, update 1, delete 0
Unit test Platform: Tizen IVI
Unit test result summary: pass 0, fail 1, block 0
[webapi] Fix python script security for webtestingservice

- Update 4 script to catch exception
- Set "HttpOnly" to all cookies
Merge pull request #290 from haoxli/haoxli/webapi/zap-security-2

[webapi] Fix python script security for webtestingservice
[webapi] [XWALK-866] Modify tests.full.xml and tests.xml
Merge pull request #292 from wanghongjuan/wanghongjuan/webapi/dlna

[webapi] [XWALK-866] Modify tests.full.xml and tests.xml