Update WPT service-worker resource-timing test to use hosts[alt]

Update WPT service-worker resource-timing test to use hosts[alt]
https://bugs.webkit.org/show_bug.cgi?id=197329

Reviewed by Chris Dumez.

LayoutTests/imported/w3c:

Set alt server as 127.0.0.1.
Use hosts[alt][] instead of domains[www] to trigger a cross origin load.

* resources/config.json:
* web-platform-tests/service-workers/service-worker/resource-timing.https-expected.txt: Removed.
* web-platform-tests/service-workers/service-worker/resource-timing.sub.https-expected.txt: Added.
* web-platform-tests/service-workers/service-worker/resource-timing.sub.https.html: Renamed from LayoutTests/imported/w3c/web-platform-tests/service-workers/service-worker/resource-timing.https.html.
* web-platform-tests/service-workers/service-worker/resources/resource-timing-iframe.sub.html:

LayoutTests:

* TestExpectations:

git-svn-id: https://svn.webkit.org/repository/webkit/trunk@244776 268f45cc-cd09-0410-ab3c-d52691b4dbfc