feat(cinder-csi): Allow deletionPolicy to be configurable (#9736)

roles/kubernetes-apps/snapshots/cinder-csi/defaults/main.yml

@@ -3,3 +3,4 @@ snapshot_classes:
   - name: cinder-csi-snapshot
     is_default: false
     force_create: true
+    deletionPolicy: Delete

roles/kubernetes-apps/snapshots/cinder-csi/templates/cinder-csi-snapshot-class.yml.j2

@@ -7,7 +7,7 @@ metadata:
   annotations:
     storageclass.kubernetes.io/is-default-class: "{{ class.is_default | default(false) | ternary("true","false") }}"
 driver: cinder.csi.openstack.org
-deletionPolicy: Delete
+deletionPolicy: "{{ class.deletionPolicy | default("Delete") }}"
 parameters:
   force-create: "{{ class.force_create }}"
 {% endfor %}