Decode document into unstructured

decode.go

func decode(doc string) (*unstructured.Unstructured, *schema.GroupVersionKind, error) {
	unstruct := &unstructured.Unstructured{}
	_, gvk, err := scheme.Codecs.UniversalDeserializer().Decode([]byte(doc), nil, unstruct)
	if err != nil {
		return nil, nil, err
	}

	return unstruct, gvk, nil
}