Add /dev volume (#6319)

roles/kubernetes-apps/external_provisioner/local_volume_provisioner/templates/local-volume-provisioner-ds.yml.j2

@@ -42,6 +42,8 @@ spec:
             - name: local-volume-provisioner
               mountPath: /etc/provisioner/config
               readOnly: true
+            - mountPath: /dev
+              name: provisioner-dev
 {% for class_name, class_config in local_volume_provisioner_storage_classes.items() %}
             - name: local-volume-provisioner-hostpath-{{ class_name }}
               mountPath: {{ class_config.mount_dir }}
@@ -51,6 +53,9 @@ spec:
         - name: local-volume-provisioner
           configMap:
             name: local-volume-provisioner
+        - name: provisioner-dev
+          hostPath:
+            path: /dev
 {% for class_name, class_config in local_volume_provisioner_storage_classes.items() %}
         - name: local-volume-provisioner-hostpath-{{ class_name }}
           hostPath: