There were a few tests/configurations that the FreeBSD job did under
Cirrus that we didn't carry over yet. I looked into this, and the
attached patch fixes that. Some of these tests are quite important, I
think, so we should put those somewhere.
I moved most of them over to macOS, mainly to keep them all together,
since some things had already been moved there, and the overall run-time
outcome from this seems reasonable.
The "Test running" step could probably be tweaked cosmetically a bit
more. I put in a YAML anchor so we could move it around or duplicate it
more easily, but maybe that's not necessary or useful (and the use of
the DYLD_* environment variable doesn't make it portable anyway). Also,
it's not clear if the "Stop running server" step is needed and exactly
how it should be phrased to be most effective in this new environment.
