Show how to use Persistent Volumes with Infinispan

There is a need to show how Infinispan can work with Persistent Volumes (both local to the Pod and shared between them). The demo should use StatefulSets.

Useful links:

• https://kubernetes.io/docs/concepts/workloads/controllers/statefulset/
• https://thenewstack.io/strategies-running-stateful-applications-kubernetes-pet-sets/
• https://kubernetes.io/docs/concepts/storage/persistent-volumes/#dynamic
• https://kubernetes.io/docs/concepts/storage/persistent-volumes/#access-modes
• https://docs.openshift.org/latest/install_config/storage_examples/shared_storage.html