To Reproduce Steps to reproduce the behavior:

1. Modify OpenStackControlPlane resource using "oc edit" with the following content:

   spec:
     nova:  
       template:
         customServiceConfig: |
           [DEFAULT]
           debug=True
     keystone:  
       template:
         customServiceConfig: |
           [DEFAULT]
           debug=True

1. customServiceConfig is applied on keystene while customServiceConfig is not applied on nova

Expected behavior

• customServiceConfig works in nova

Bug impact

• It's better to be able to configure spec.<service>.template.customServiceConfig on all services. Currently only nova doesn't support it as far as I checked.
• For example https://access.redhat.com/solutions/7109382 describes how to enable debug logs with a unified way for each service, but it doesn't work only for Nova

Known workaround

• Configure customServiceConfig on each nova service, like spec.nova.template.apiServiceTemplate.customServiceConfig 

Additional context

• Cinder CRD has customServiceConfig on the top
  https://github.com/openstack-k8s-operators/cinder-operator/blob/4aab51f61506be0605730dafe4864872ae6b0744/api/bases/cinder.openstack.org_cinders.yaml#L726-L731
• Nova CRD doesn't have customServiceConfig on the top level
  https://github.com/openstack-k8s-operators/nova-operator/blob/3d3857d13c4c62536c1955838fc0a066fc9d3ca3/api/bases/nova.openstack.org_nova.yaml