[wrt]Update xwalk-launcher to open_app

xwalk-launcher -s/-r/--fullscreen no change
[Detailed commit message (if have)]
Impacted TCs num(approved):
update auto testcase: 3 xwalk_common.sh
update manu testcase: 23 html
Unit test platform: [Tizen]
Test Result:
auto testcase: Pass 7, fail 2, block 9
BugID: https://crosswalk-project.org/jira/browse/XWALK-2812
manu testcase: Pass 23, fail 0, block 0