Set Cinder customServiceConfig globally in DCN DT

The customServiceConfig for cinder in the DCN DT is used
to set the storage_availability_zone. We wish to do this
for all Cinder services in the default site (`az0`), not
just for cinderAPI or cinderBackup as the AZ was missing
from the cinder-scheduler. Thus, we will move it to the
global section under the cinder template and out of the
cinderAPI and cinderBackup since they will inherit it.
The backend_availability_zone is kept inside of the
cinderVolumes loop since it needs to be set for other
AZs. There's no harm in letting the loop set it for az0
and it's simpler to do that than add a conditional.

Jira: https://issues.redhat.com/browse/OSPRH-11915

Signed-off-by: John Fulton <[email protected]>

Author: fultonj

roles/ci_dcn_site/templates/service-values.yaml.j2

@@ -10,11 +10,11 @@ data:
   preserveJobs: false
   cinder:
     uniquePodNames: false
-  cinderAPI:
-    replicas: 3
     customServiceConfig: |
       [DEFAULT]
-      default_availability_zone = az0
+      storage_availability_zone = az0
+  cinderAPI:
+    replicas: 3
   cinderBackup:
     replicas: 3
     customServiceConfig: |
@@ -23,7 +23,6 @@ data:
       backup_ceph_conf = /etc/ceph/az0.conf
       backup_ceph_pool = backups
       backup_ceph_user = openstack
-      storage_availability_zone = az0
   cinderVolumes:
 {% for _ceph in _ceph_vars_list %}
     {{ _ceph.cifmw_ceph_client_cluster }}: