Let's ensure either on the side of the test-operator or ci-framework that there is storageClass that automatically deletes PVs once PVC associated with it is deleted. Right now the default local-storage storageClass does not free the PVs once the PVC is deleted. This might lead to a situation when there are no PVs left on the system.

DoD:

• There is storageClass in OSP 18 that has reclaimPolicy: Delete and that can be consumed by the test-operator (and that actually works).
• Test-operator uses RWO by default when prallel == false in the Tempest CR. This will allow us to consume the PVs with lvms-local-storage storageClass.

PRs:

• https://github.com/openstack-k8s-operators/test-operator/pull/96