[nova] Add cloud_dns_admin role to nova service user
[nova] Add cloud_dns_admin role to nova service user

The nova service user is used e.g. when retrying to delete an instance
on nova-compute restart. If the customer has a DNS name assigned to
their port, deleting of the port and thus the server will fail, if the
nova service user doesn't have the appropriate role.

sapcc/helm-charts,sapcc/helm-charts,sapcc/helm-charts,sapcc/helm-charts