Upgrade Code-Generators

[BugRoger]

Upgrade the Go dependency to https://github.com/kubernetes/code-generator

This allows us to use the deepcopy generator, that will simplify the ugly copy-by-remote-call:

kubernikus/pkg/controller/launch/pool_manager.go

Lines 85 to 87 in 65ff9d8

	copy, err := cpm.Clients.Kubernikus.Kubernikus().Klusters(cpm.Kluster.Namespace).Get(cpm.Kluster.Name, metav1.GetOptions{})
	if err != nil {
	return err

To:

copy := kluster.DeepCopy()

It will also allow us to use an inbuilt script and get rid of the whole code-gen Makefile magic:

https://github.com/kubernetes/sample-controller/blob/258eead08702028194ade1c0a7f958c837d6f081/hack/update-codegen.sh#L28-L31

Open question: The code-generators need to be in sync with the api-machinery version. Does the api-machinery library need to be in sync with the cluster it's running on?

[databus23]

You mean client-go dependency?

[databus23]

ah no the generator dep, I see.