deepcopy: misc fixes for static deepcopy compilation
deepcopy: misc fixes for static deepcopy compilation

- port direct calls to deepcopy funcs
- apimachinery: fix types in unstructured converter test
- federation: fix deepcopy registration

Kubernetes-commit: 2bbe72d4e09f7c95e1ad851187d4733a54644fbe

kubernetes/apimachinery