Try a shorter polling time in run-tests.sh

OK there's an actual bug here caused by the ordering improvements, I made it special case parallel gitlab jobs less, but missed one if condition that needed to be removed.

With that and updating some @group #slow for how it works when ordering is actually correct, test times are down by half.

This now incorporates 📌 [CI] Remove the 'with-database' requirement for unit tests Active , shall we wait on that one or do everything here?

I think we could revert the commits from [##3477529], there is no dependency I just wanted to check the timings with/without it.

Un-merged the commits from that issue, and updated the issue summary.

Looks sensible.

doesn't cherry pick to 11.0.x

I think that's because we skipped 11.0.x for some other similar backports, however the main benefit for this one is in backporting to 10.4.x since that will be the basis of 10.x test runs until EOL, so I went ahead and cherry-picked just the run-tests.sh changes to there.

Automatically closed - issue fixed for 2 weeks with no activity.