[wrt]Add WebRTC test webapp to suite
[Detailed commit message (if have)]
Impacted TCs num(approved):New 0,Update 2,Delete 0
UT result: Pass 2, Fail 0, Block 0
pack the webrtc to wgt and launch on the ivi ok
[wrt]Change the manu case to auto case

[Detailed commit message (if have)]
Impacted TCs num(approved):New 1,Update 5,Delete 0
UT result: Pass 5,Fail 1, Block 0
BugID:https://bugs.tizen.org/jira/browse/TC-1937
[webapi] Automate a test for CSS3 Style as reftest

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: Andriod
Unit test result summary: Pass 1, Fail 0, Blocked 0
[wrt]Update xwalk-launcher to open_app

[Detailed commit message (if have)]
Impacted TCs num(approved):New 0,Update 5,Delete 0
UT result: Pass 5, Fail 0, Block 0
Merge pull request #1227 from linshen/shenlin/update-xwalk-open_app

[wrt]Update xwalk-launcher to open_app
Merge pull request #1220 from linshen/shenlin/update-webrtc

[wrt]Add WebRTC test webapp to suite
Merge pull request #1214 from linshen/shenlin/add-command-auto-1114

[wrt]Change the manu case to auto case
Merge pull request #1222 from JianfengXu/style/automation

[webapi] Automate a test for CSS3 Style as reftest