Goal: 

Introduce logic in the Galera operator to detect when a pod is scheduled on a node marked as out-of-service via the node.kubernetes.io/out-of-service taint, so that the associated PVC can be deleted to trigger rescheduling of the pod onto a healthy node.
This is needed to maintain availability during the temporary or permanent unavailability of one or more worker nodes.

Acceptance Criteria:

• The operator must inspect the node assigned to each Galera pod

• Detection of the node.kubernetes.io/out-of-service taint on assigned nodes must be implemented

• The PVC mounted by the affected pod should be identified using its volumeClaimName

• The operator must delete the PVC when the associated pod is running on a tainted node

• Log output must clearly include pod name, PVC name, node name, and taint key

• Pods running on untainted nodes must remain unaffected

• Rescheduling should result in automatic recreation of the pod and its PVC on a healthy node