Implement topology support for Cinder CSI (#5667)

* make cinder csi topology aware

* change feature description do better reflect whats being done

* remove sameas true since it isn't required

roles/kubernetes-apps/csi_driver/cinder/templates/cinder-csi-controllerplugin.yml.j2

@@ -35,6 +35,9 @@ spec:
           image: {{ cinder_csi_provisioner_image_repo }}:{{ cinder_csi_provisioner_image_tag }}
           args:
             - "--csi-address=$(ADDRESS)"
+{% if cinder_topology is defined and cinder_topology %}
+            - --feature-gates=Topology=true
+{% endif %}
           env:
             - name: ADDRESS
               value: /var/lib/csi/sockets/pluginproxy/csi.sock

roles/kubernetes-apps/persistent_volumes/cinder-csi/templates/cinder-csi-storage-class.yml.j2

@@ -11,4 +11,13 @@ parameters:
 {% for key, value in (class.parameters | default({})).items() %}
   "{{ key }}": "{{ value }}"
 {% endfor %}
+{% if cinder_topology is defined and cinder_topology is sameas true %}
+allowedTopologies:
+- matchLabelExpressions:
+  - key: topology.cinder.csi.openstack.org/zone
+    values:
+{% for zone in cinder_topology_zones %}
+    - "{{ zone }}"
+{% endfor %}
+{% endif  %}
 {% endfor %}