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Issue description

Theoretically, we should be able to remove one of the two compute nodes and add it back in.  I was able to successfully remove a compute node following the Red Hat docs:

https://docs.redhat.com/en/documentation/red_hat_openstack_services_on_openshift/18.0/html/maintaining_the_red_hat_openstack_services_on_openshift_deployment/assembly_scaling-data-plane-nodes

(I followed 2.3 to remove a node)

I then followed 2.1 to add a node to the node set, but it never showed up as a hypervisor.  Maybe with the new environment this will work.

In any case, I think it would be useful to get this to work, at the very least so an instructor could properly demonstrate how it works.  If we are successful, it would be a really great addition to a GE/lab/exam.  Adding/removing compute nodes is one of those things that you have to be able to do if you manage an OpenStack environment.