Add switch for running Sonobuoy tests in parallel

[mbuechse]

Many people at the SCS hackathon observed that Sonobuoy took a lot of time. Having it run its tests in parallel might help that.

[garloff]

OK, on my CiaB (8-core) test with a 3+3 cluster, the --e2eparallel=true flag caused the runtime to go from 2hrs to 38mins. No failures.

[fkr]

@gerbsen see my comment - with that in mind, can you remove the 'change requested'?

[gerbsen]

IMHO this could be an ideal test ballon for auto-generated tests. Would have to be checked manually as well of course. I tried this with Claude an attach the result for future reference. I didn't test these tests myself.

scs-compliance-check-test.yaml
scs_compliance_check_test.py
report.yaml

[mbuechse]

I think is goes without saying that feeding our code to Claude is not something I appreciate. The test code it produced is 885 lines of boilerplate code that would need maintenance, for instance, it checks whether all command-line options are documented in the usage output, but the list of options is hard-coded, so it's no use at all. I can't stress enough how I oppose this.