Update vendor files to point to kubernetes-1.12.0-beta.1

vendor/k8s.io/client-go/scale/scheme/zz_generated.deepcopy.go

@@ -74,12 +74,8 @@ func (in *ScaleStatus) DeepCopyInto(out *ScaleStatus) {
 	*out = *in
 	if in.Selector != nil {
 		in, out := &in.Selector, &out.Selector
-		if *in == nil {
-			*out = nil
-		} else {
-			*out = new(v1.LabelSelector)
-			(*in).DeepCopyInto(*out)
-		}
+		*out = new(v1.LabelSelector)
+		(*in).DeepCopyInto(*out)
 	}
 	return
 }