Only put models with GVK in types union (with some refactoring)

[muff1nman]

The types unions main/only purpose was to allow creating lists of objects to output to a single yaml document for sending to kubernetes. These objects must have a group/version and kind. Therefore any objects without would not be used in this manner and should be removed from the typesUnion.

Let me know if you'd like these commits/prs split/merged differently