Register scale subresource for Deployments and ReplicaSets.

Define etcd registry methods for scale subresource in Deployments and
ReplicaSets. Register them with the API server.

pkg/apis/extensions/helpers.go

@@ -1,47 +0,0 @@
-/*
-Copyright 2015 The Kubernetes Authors All rights reserved.
-
-Licensed under the Apache License, Version 2.0 (the "License");
-you may not use this file except in compliance with the License.
-You may obtain a copy of the License at
-
-    http://www.apache.org/licenses/LICENSE-2.0
-
-Unless required by applicable law or agreed to in writing, software
-distributed under the License is distributed on an "AS IS" BASIS,
-WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
-See the License for the specific language governing permissions and
-limitations under the License.
-*/
-
-package extensions
-
-// TODO(madhusudancs): Fix this when Scale group issues are resolved (see issue #18528).
-// import (
-// 	"fmt"
-
-// 	"k8s.io/kubernetes/pkg/api"
-// 	"k8s.io/kubernetes/pkg/api/unversioned"
-// )
-
-// // ScaleFromDeployment returns a scale subresource for a deployment.
-// func ScaleFromDeployment(deployment *Deployment) (*Scale, error) {
-// 	selector, err := unversioned.LabelSelectorAsSelector(deployment.Spec.Selector)
-// 	if err != nil {
-// 		return nil, fmt.Errorf("invalid label selector: %v", err)
-// 	}
-// 	return &Scale{
-// 		ObjectMeta: api.ObjectMeta{
-// 			Name:              deployment.Name,
-// 			Namespace:         deployment.Namespace,
-// 			CreationTimestamp: deployment.CreationTimestamp,
-// 		},
-// 		Spec: ScaleSpec{
-// 			Replicas: deployment.Spec.Replicas,
-// 		},
-// 		Status: ScaleStatus{
-// 			Replicas: deployment.Status.Replicas,
-// 			Selector: selector.String(),
-// 		},
-// 	}, nil
-// }