Create default storage class when using azure cloud provider

playbooks/openshift-hosted/private/openshift_default_storage_class.yml

@@ -3,6 +3,4 @@
   hosts: oo_first_master
   roles:
   - role: openshift_default_storage_class
-    when:
-    - openshift_cloudprovider_kind is defined
-    - openshift_cloudprovider_kind in ['aws','gce','openstack','vsphere']
+    when: openshift_cloudprovider_kind | default('none') in ['aws','azure','gce','openstack','vsphere']