Katapult doesn't remove deleted/renamed services

[ffissore]

At the moment, katapult relies on kubectl apply, applying whatever yaml came out of templates.
If something, eg a service, is removed or renamed in templates, kubectl will not remove it or it will create a new renamed service. This happens because kubectl has no notion of the cluster state. Tools like terraform instead do know about that state, and store it in a dedicated file.

Katapult should adopt the approach taken by tools like terraform and deal with the current state of the cluster, so that removing something, eg a service, which it previously created, results in the removal of that service