Getter is a (k8s.io/kubernetes/pkg/client/unversioned).NodeInterface compatible
interface designed only for getting nodes. It should be used as a parameter to functions
so that they can be more easily unit tested
Lister is a (k8s.io/kubernetes/pkg/client/unversioned).NodeInterface compatible
interface designed only for listing nodes. It should be used as a parameter to functions
so that they can be more easily unit tested