Currently, the syntax:

telemetry:     
  enabled: false
  template: {} 

fails with:

"The OpenStackControlPlane \"openstack\" is invalid: spec.telemetry.template.metricStorage.dataplaneNetwork: Invalid value: \"\": spec.telemetry.template.metricStorage.dataplaneNetwork in body should match '^[a-zA-Z0-9][a-zA-Z0-9\\-_]*[a-zA-Z0-9]$'"] 

This was attempted to be solved by making dataplaneNetwork non-mandatory as per https://issues.redhat.com/browse/OSPRH-8535 with PR https://github.com/openstack-k8s-operators/telemetry-operator/pull/439 but this did not worked.

The current solution was to remove the "template: {}" part from the yaml as seen in https://github.com/openstack-k8s-operators/data-plane-adoption/pull/525, but T-O should be supporting the other syntax.

The solution might be to make the dataplaneNetwork a ptr.