Consider generating kustomize bases from helm charts

[killianmuldoon]

As far as I understand the network-operator repo has two deployment pipelines - a helm chart and a kustomize flow. This can cause issues where changes need to be made on both in parallel and kept in sync.

In order to convert this to a single flow we could generate the kustomize bases from the helm charts. This should be possible with https://github.com/kubernetes-sigs/kustomize/blob/master/examples/chart.md but requires some config to get it right.

This would allow the helm charts to be the source of truth for creation of the manifests with a layer of kustomize patches for workflows where needed. The end result should be that much of the config folder could be regenerated on the fly, leaving only specific configurations, e.g. default, dev, actually having meaningful changes.

This should be enforced by adding a CI check to ensure the kustomize bases do not go out of sync with what is generated from the helm charts.

[killianmuldoon]

FYI @vasrem seeing as we spoke about this earlier.