DNS still flaky on windows

[flub]

It seems the windows CI is still giving us timeouts on DNS resolution. This is weird.

[ramfox]

After some attempts by both @Arqu and I a few weeks ago, we were both unable to trigger the DNS test failure. I also checked: since this issue was created (which is, I'm assuming the same time that this test was flakey on CI) it hasn't failed on a single "Flakey: CI" run.

So, when do we decide that this isn't really a flakey test, and that your previous work on DNS actually fixed the issue?

[flub]

if there isn't a single flaky instance of this let's move it back to not flaky. if it turns out flaky again it'll be moved back to the sin bin swiftly enough

[flub]

Let's try to close this again. The staggered DNS approach seems successful.