This is a clone of issue
OCPBUGS-2088. The following is the description of the original issue:
The rendezvous host must be one of the control plane nodes.
The user has control over the rendezvous IP in the agent-config. In the case where they also provide NMState config with static IPs, we are able to verify whether the rendezvous IP points to a control plane node or not. If it does not, we should fail.