This alert fires when a kubernetes-nmstate deployment is detected and the
Kubernetes NMState Operator is not installed. This alert only affects OpenShift
Virtualization 4.10.
The Cluster Network Addons Operator (CNAO) does not support kubernetes-nmstate
deployments in OpenShift Virtualization 4.11 and later.
You cannot upgrade your cluster to OpenShift Virtualization 4.11.
Install the Kubernetes NMState Operator from the OperatorHub. CNAO automatically
transfers the kubernetes-nmstate deployment to the Operator.
Afterwards, you can upgrade to OpenShift Virtualization 4.11.