[ENHANCEMENT] Make monitor out of integration

[neilv-g]

See #2396

This test makes a network call, and the URL being called was temporarily down.
As a result, builds on PRs were failing, which is not optimal since we should still be able to merge changes even if a dependency is down.

We should move what this test covers to a monitor/canary that runs and alerts the on-call on any failures.

[jcscottiii]

Probably want to do the same for our calls to:

1. wpt.fyi (test data)
2. uma-export server (metrics)
3. chime (email)
4. GitHub (we get releases from there)