Use theforeman/actions for GitHub Actions configuration

[ekohl]

@evgeni this is the only repo where I tried to also test with Foreman versions and archiving the lock files fails. I suppose the cache key isn't long enough and needs more :(

[evgeni]

3.8 is failing, which I think is a test setup issue, not a code issue. should we just drop it from the matrix?

Edit: or pick https://github.com/theforeman/foreman/pull/9932 into 3.8?

[ekohl]

Edit: or pick theforeman/foreman#9932 into 3.8?

I wonder why it even needs PuppetRelatedHelper in the tests. Perhaps we can just drop that.

[evgeni]

Edit: or pick theforeman/foreman#9932 into 3.8?

I wonder why it even needs PuppetRelatedHelper in the tests. Perhaps we can just drop that.

WFM

[evgeni]

now it fails on the branches that do have the helper :see_no_evil:

[ekohl]

How about conditionally including the helper? Let's see what CI says.

[ekohl]

That's now green.