- previously, there was no way to auto-assign a port by default
which led to conflicts with other deployments at times
- nodeport_port param can still be used to specify a port if desired
* Move label templates into `common` role
So that there is single source of labels management, and labels are
unified across the other roles
* Introduce `additional_labels`
* Fix paths for labels templates
* Return `additional_labels_items` as list
* Add molecule tests
