Deploy Cinder CSI driver to provision volumes over OpenStack (#5184)

* Deploy Cinder CSI driver to provision volumes over OpenStack

* Deploy Cinder CSI StorageClass

* Cinder CSI doc

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

@@ -0,0 +1,6 @@
+---
+storage_classes:
+  - name: cinder-csi
+    is_default: false
+    parameters:
+      availability: nova

roles/kubernetes-apps/persistent_volumes/cinder-csi/tasks/main.yml

@@ -0,0 +1,19 @@
+---
+- name: Kubernetes Persistent Volumes | Copy Cinder CSI Storage Class template
+  template:
+    src: "cinder-csi-storage-class.yml.j2"
+    dest: "{{ kube_config_dir }}/cinder-csi-storage-class.yml"
+  register: manifests
+  when:
+    - inventory_hostname == groups['kube-master'][0]
+
+- name: Kubernetes Persistent Volumes | Add Cinder CSI Storage Class
+  kube:
+    name: cinder-csi
+    kubectl: "{{ bin_dir }}/kubectl"
+    resource: StorageClass
+    filename: "{{ kube_config_dir }}/cinder-csi-storage-class.yml"
+    state: "latest"
+  when:
+    - inventory_hostname == groups['kube-master'][0]
+    - manifests.changed

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

@@ -0,0 +1,14 @@
+{% for class in storage_classes %}
+---
+kind: StorageClass
+apiVersion: storage.k8s.io/v1
+metadata:
+  name: "{{ class.name }}"
+  annotations:
+    storageclass.kubernetes.io/is-default-class: "{{ class.is_default | default(false) }}"
+provisioner: cinder.csi.openstack.org
+parameters:
+{% for key, value in (class.parameters | default({})).items() %}
+  "{{ key }}": "{{ value }}"
+{% endfor %}
+{% endfor %}

roles/kubernetes-apps/persistent_volumes/meta/main.yml

@@ -6,3 +6,10 @@ dependencies:
       - cloud_provider in [ 'openstack' ]
     tags:
       - persistent_volumes_openstack
+
+  - role: kubernetes-apps/persistent_volumes/cinder-csi
+    when:
+      - cinder_csi_enabled
+    tags:
+      - persistent_volumes_cinder_csi
+      - cinder-csi-driver