Per discussion with @greg, Apache probably works best.

This is weird, I vividly remember we added a LICENSE file to the repo. The original Gitlab-suggested playbook we started with was licensed under MIT. We'll verify and re-add the license back to the repo.

Great, thanks @Sergey.Trofimovsky.SF, MIT is fine as well.

Here's the LICENSE file finally in the root of the repo, please review: https://gerrit.wikimedia.org/r/plugins/gitiles/operations/gitlab-ansible/+/refs/heads/master/LICENSE