Fix incorrect urls in WebSocket tests.

Replaced location.hostname with "127.0.0.1", as it was empty,
what lead to invalid urls.
[wrt] Add 3 apk source for wrt-rtcoremanu-android-tests
[wrt] Update pack.sh for wrt-webfeaturesmanu-android-tests
[wrt] Update apksource and script for wrt-packagemgtmanu-android-tests
[wrt] Update pack.sh for wrt-manifestspecificmanu-android-tests
[wrt] Update appsource and pack.sh for wrt-extensionmanu-android-tests
Merge pull request #569 from kangxu/kangxu/wrt/wrt-webfeaturesmanu-android-tests/updateScript

[wrt] Update pack.sh for wrt-webfeaturesmanu-android-tests
Merge pull request #555 from jizydorczyk/XWALK-2204

Fix incorrect urls in WebSocket tests.
Merge pull request #570 from kangxu/kangxu/wrt/wrt-packagemgtmanu-android-tests/updateScript

[wrt] Update apksource and script for wrt-packagemgtmanu-android-tests
Merge pull request #571 from kangxu/kangxu/wrt/wrt-manifestspecificmanu-android-tests/updateScript

[wrt] Update pack.sh for wrt-manifestspecificmanu-android-tests
Merge pull request #573 from kangxu/kangxu/wrt/wrt-extensionmanu-android-tests/update

[wrt] Update appsource and pack.sh for wrt-extensionmanu-android-tests
Merge pull request #568 from kangxu/kangxu/wrt/wrt-rtcoremanu-android-tests/addsource

[wrt] Add 3 apk source for wrt-rtcoremanu-android-tests