[wrt] Update test steps for Crosswalk_Google_Play_Multiple
[wrt] update tcs for sampleapp/Crosswalk_SampleApp_WebRTC_Launch.html

Impacted TCs num(approved): New 0, update 3, deleted 0
Unit test platform: [tizen]
Unit test result summary: Pass 3   , Fail  0, Blocked  0
[wrt] Update test steps for minify css and js
[wrt][XWALK-1725] Update test steps for Crosswalk_Packer_Tool_Arch_Undefined
[webapi] Fix XWALK-1474 to configure media access permissions for getUserMedia API in AndroidManifest.xml

- Test success on android x86 mobile.
- APK doesn't crash again.

Signed-off-by: Hao yunfeix <yunfeix.hao@intel.com>
Merge pull request #235 from kangxu/kangxu/wrt/googleplay/Crosswalk_Google_Play_Multiple/updateSteps

[wrt] Update test steps for Crosswalk_Google_Play_Multiple
Merge pull request #241 from linshen/modify-webrtc-tcs

[wrt] Fix XWALK-1636/1645 to update  test step
Merge pull request #245 from kangxu/kangxu/wrt/packertool/minifyCssJs/updateSteps

[wrt] [XWALK-1671] Update test steps for minify css and js
Merge pull request #246 from kangxu/kangxu/wrt/packertool/archUNdefined/updateSteps

[wrt][XWALK-1725] Update test steps for Crosswalk_Packer_Tool_Arch_Undef...
[wrt] Add 4 TCs for wrt-packertool-android-tests
Merge pull request #240 from kangxu/kangxu/wrt/packertool/pythonSupport/add

[wrt] Add 4 TCs for wrt-packertool-android-tests