Draft: Improve Docker service healthcheck test duration
What does this MR do?
Reduces the health check timeout duration to 5 seconds.
Why was this MR needed?
When waiting for a service to fail, we'd usually wait 30 seconds. This makes the test run longer than it needs to.
What's the best way to test this MR?
Running TestDockerServiceHealthcheck, especially on Windows, should now finish faster.