Use apiextension v1

- upgrade from apiextension v1beta1 to v1
 - generate yaml manifest for crd intead of applying it at runtime
  - users will have to apply the manifest with kubectl
 - kg and kgctl log an error if the crd is not present
 - now validation should actually work

Signed-off-by: leonnicolas <leonloechner@gmx.de>

tools.go

@@ -23,5 +23,5 @@ import (
 	_ "k8s.io/code-generator/cmd/deepcopy-gen"
 	_ "k8s.io/code-generator/cmd/informer-gen"
 	_ "k8s.io/code-generator/cmd/lister-gen"
-	_ "k8s.io/kube-openapi/cmd/openapi-gen"
+	_ "sigs.k8s.io/controller-tools/cmd/controller-gen"
 )