[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
[WRT] Add python packagement files

Signed-off-by: Hao yunfeix <yunfeix.hao@intel.com>
Merge pull request #776 from xinliux/xinliux/usecase/MergeTizen

[usecase-webapi] Merge tizen and w3c to usecase
Merge pull request #783 from kangxu/kangxu/wrt/wrt-rtcoremanu-android-tests/removeDuplicated

[wrt] Remove 97 duplicated cases in wrt-rtcoremanu-android-tests
Merge pull request #756 from haoyunfeix/yunfei/wrt-add-python-packagement-files

[WRT] Add python packagement files
Merge pull request #785 from wanghongjuan/wanghongjuan/wrt/add-manifest-manu

[wrt] Add 6 TCs to manifestspecificmanu
Merge pull request #784 from kangxu/kangxu/wrt/wrt-packertoolmanu-android-tests/removeDuplicated

[wrt] Remove 103 duplicated cases in wrt-packertoolmanu-android-tests