CentOS fallout

With people now moving to CentOS alternatives, config managers are slow to catch up.

Fresh example: Rocky 8.4 only offers centos-release-ansible-29 and this version of ansible doesn't yet recognize Rocky as a redhat family distro. I'm told that ansible 2.11 or newer is required for this. Which is worth a sentence or two in our current docs until this is sorted out out of the box.