Add RabbitMQ Quorum queue migration playbook

[Alex-Welsh]

This playbook is required for the upgrade job in Caracal CI

Tested & working

[Alex-Welsh]

Tested & working

[markgoddard]

I think overall I'd prefer to see this structured as 2 playbooks - prechecks and postchecks, and a script. If it's going to be explicitly marked as only for CI then I'd accept it in its current form.

[Alex-Welsh]

I think overall I'd prefer to see this structured as 2 playbooks - prechecks and postchecks, and a script. If it's going to be explicitly marked as only for CI then I'd accept it in its current form.

I'll restructure it

[Alex-Welsh]

@markgoddard unfortunate timing on that review I'm afraid. I've just refactored it all into a script. It would've had to be at least 3 playbooks to cover all the checks I think, so I moved them all into the script and just use host command run to check controllers.

I was pushing to this branch just to make it easier to pull the changes to my AIOs for testing

[Alex-Welsh]

General thoughts on the new script approach would be welcome though

[Alex-Welsh]

Again, tested and working

[markgoddard]

Mostly LGTM. Docs will need an update, but could be done in a separate PR.

[MoteHue]

Not tested myself, but looks good from my eyes