Special case after https://jira.percona.com/browse/PMM-9965
If a user creates 2 clusters using the same Kubernetes config file, there will be 2 cluster names pointing to the same cluster.
When you unregister one of them, the VM operator will be removed after https://jira.percona.com/browse/PMM-9965, resulting in a cluster that cannot be monitored.
User deletes VM operator when unregistering a K8 cluster
Steps to reproduce:
Go to DBaaS and register k8s cluster
Register a second cluster using the same Kubernetes config.
Unregister one of them
VM operator is removed from the cluster that still exists.
VM operator remain installed.