Add DecodeIntoWithSpecifiedVersionKind() to Decoder interface.

The function validate/default the body with the passed in apiVersion and Kind.
It's called in createHandler and UpdateResource

pkg/runtime/interfaces.go

@@ -38,6 +38,7 @@ type ObjectCodec interface {
 type Decoder interface {
 	Decode(data []byte) (Object, error)
 	DecodeInto(data []byte, obj Object) error
+	DecodeIntoWithSpecifiedVersionKind(data []byte, obj Object, kind, version string) error
 }
 
 // Encoder defines methods for serializing API objects into bytes