Even more Github features added to .asf.yaml

Hi,

As you may know we have a .asf.yaml file and there are new features: https://blogs.apache.org/infra/entry/even-more-github-features-added

It's well explained at: https://github.com/apache/infrastructure-puppet/pull/1678

I had a look, maybe?

        <<Require status checks to pass before merging

          * Require branches to be up to date before merging
          * Context of a status check>>

Not sure it's needed, I think the community care enough

Jacques