[wrt][XWALK-890]Update tcs for three icon check purpose

ivi crosswalk-8.36.164:
install the manifest_icon_three_tests.xpk
check applications.db find the three icon value in db record.
[wrt]update 1 tcs for wrt-rtcore-tizen-test

Can not check launch icon in ivi,no test this testcase
Merge pull request #391 from linshen/add1tcs-wrt-rtcore-tizen-tests

[wrt][XWALK-890]Update tcs for three icon check purpose
[wrt][XWALK-1513] Update security policy test for ivi path change

- After xwalk-1513 feature resolved, we need to update the test steps, then test it on IVI device.

Impacted TCs num(approved): New 0, Update 1, Delete 0
Unit test Platform: IVI
Tizen test result summary: Pass 1, Fail 0, Block 0
[wrt][xwalk-1548] Update 3 TCs steps due to the steps is incorrect

Impacted TCs num(approved): New 0, Update 3, Delete 0
Unit test Platform: IVI
Tizen test result summary: Pass 3, Fail 0, Block 0
Merge pull request #396 from wanghongjuan/wanghongjuan/behavior/xwalk-1513

[wrt][XWALK-1513] Update security policy test for ivi path change
Merge pull request #403 from wanghongjuan/wanghongjuan/wrt/xwalk-1548

[wrt][xwalk-1548] Update 3 TCs steps due to the steps is incorrect
[wrt] update 2 tcs for wrt-integration-tizen-test

Impacted TCs num(approved): New 2, update 0,delete 0
Unit test platform: [tizen]
Unit test result summary: Pass 1 , Fail 1, Blocked  0
Crosswalk_WebApp_Update_StopService.html is Fail , webapp can not update
[wrt][XWALK-890] update checkdb: move exit(1),test continue after one case fail.
Merge pull request #406 from linshen/update-xwalk-890

[wrt][XWALK-890] delete exit(1),test continue when one case fail
Merge pull request #405 from linshen/update-integration-tize-test

[wrt]][XWALK-2028]update 2 tcs for wrt-integration-tizen-test