Switch CI from Circle to GitHub

[mamercad]

Switch CI from Circle to GitHub; you can see a run at my fork. Looks like my IDE also trimmed some whitespace in the README.md, let me know if that's a problem.

[arm4b]

@mamercad This is really nice work here!
I left one comment guessing why the GH Actions didn't run for this PR.

[mamercad]

I added on.workflow_dispatch in case you'd like to trigger it manually as well.

[mamercad]

Just dropped a PR for st2-auth-ldap if you're a maintain there as well @armab.

[mamercad]

I'm participating in Hacktoberfest, so, if you wouldn't mind adding the hacktoberfest-accepted label, I'd appreciate it.

[mamercad]

...and here's the st2-rbac-backend one.

[arm4b]

Looks good, thanks a lot!

Still wondering why GH Actions didn't start here 🤔
Can't see any setting that would block it.

[arm4b]

Thanks @mamercad, that worked after merging!

I just spot another issue when the build reports success while having failure in the tests, if you'd like to take a quick look at that too: CI build reports success on failed tests #251

[mamercad]

Thanks @mamercad, that worked after merging!

I just spot another issue when the build reports success while having failure in the tests, if you'd like to take a quick look at that too: CI build reports success on failed tests #251

...taking a look.