[webapi] Update sign-flag position in suite.json

Signed-off-by: Hao yunfeix <yunfeix.hao@intel.com>
[usecase][XWALK-2273] Fix issue for OpenFile_Test
Merge pull request #773 from haoyunfeix/yunfei/update-webapi-sign-flag

[webapi] Update sign-flag position in suite.json
[usecase-cordova] Rename cordova-usecase-android-tests to cordova-usecase-tests

- Fail Reason: XWALK-2288, XWALK-2275

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 5, fail 2, block 0
[sample-webapi] Integrate sample tests

 Impacted tests(approved): new 65, update 0, delete 0
 Unit test platform: [Tizen ivi][Android]
 Unit test result: All tests run normally
Merge pull request #775 from haoxli/haoxli/usecase-cordova/rename

[usecase-cordova] Rename cordova-usecase-android-tests to cordova-usecase-tests
Merge pull request #774 from kangxu/kangxu/usecase/wrt-usecase-android-tests/fixIssue

[usecase][XWALK-2273] Fix issue for OpenFile_Test
[usecase-embedding] Improve the pack.sh of embeddingAPI sample

Impacted tests(approved): new 0, update 0, delete 0
Unit test platform: [Android]
Unit test result summary: pass 10, fail 0, block 0
Merge pull request #777 from Honry/Honry/sample/create-sample

[sample-webapi] Integrate sample tests
Merge pull request #780 from zhuyongyong/yongzhu/embeddingAPI-sample/improve

[usecase-embedding] Improve the pack.sh of embeddingAPI sample
Update the pack script and suite json to latest version
Merge pull request #781 from yugang/yugang/update-py-coding-style

Update the pack script and suite json to latest version
[webapi][XWALK-2368] Update BlobBuilder to Blob

 - BlobBuilder is deprecated
 https://crosswalk-project.org/jira/browse/XWALK-2368
Merge pull request #765 from yunxiaoxie/yunxiaoxie/BlobBuilder

[webapi] Update BlobBuilder to Blob
Update pack.py coding style for pylint's output
Merge pull request #782 from yugang/yugang/update-py-coding-style

Update pack.py coding style for pylint's output
[usecase-webapi] Merge tizen and w3c to usecase

- Merge webapi-usecase-tizen-tests and webapi-usecase-w3c-tests to webapi-usecase-tests
- Test platform: Tizen IVI and Android, app can run well on these two platform
[wrt] Remove 97 duplicated cases in wrt-rtcoremanu-android-tests
[wrt] Remove 103 duplicated cases in wrt-packertoolmanu-android-tests
[wrt] Add 6 TCs to manifestspecificmanu

Impacted TCs num(approved): New 6, Update 0, Delete 0
Unit test Platform: Android
Android test result summary: Pass 6, Fail 0, Block 0