vendor update for E2E framework

Signed-off-by: Madhu Rajanna <madhupr007@gmail.com>

vendor/k8s.io/kubernetes/test/utils/update_resources.go

@@ -0,0 +1,64 @@
+/*
+Copyright 2018 The Kubernetes Authors.
+
+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 utils
+
+import (
+	"fmt"
+	"time"
+
+	"k8s.io/apimachinery/pkg/runtime/schema"
+	"k8s.io/apimachinery/pkg/util/wait"
+	"k8s.io/client-go/scale"
+	"k8s.io/kubernetes/pkg/kubectl"
+)
+
+const (
+	// Parameters for retrying updates/waits with linear backoff.
+	// TODO: Try to move this to exponential backoff by modifying kubectl.Scale().
+	updateRetryInterval = 5 * time.Second
+	updateRetryTimeout  = 1 * time.Minute
+	waitRetryInterval   = 5 * time.Second
+	waitRetryTimeout    = 5 * time.Minute
+)
+
+func RetryErrorCondition(condition wait.ConditionFunc) wait.ConditionFunc {
+	return func() (bool, error) {
+		done, err := condition()
+		if err != nil && IsRetryableAPIError(err) {
+			return false, nil
+		}
+		return done, err
+	}
+}
+
+func ScaleResourceWithRetries(scalesGetter scale.ScalesGetter, namespace, name string, size uint, gr schema.GroupResource) error {
+	scaler := kubectl.NewScaler(scalesGetter)
+	preconditions := &kubectl.ScalePrecondition{
+		Size:            -1,
+		ResourceVersion: "",
+	}
+	waitForReplicas := kubectl.NewRetryParams(waitRetryInterval, waitRetryTimeout)
+	cond := RetryErrorCondition(kubectl.ScaleCondition(scaler, preconditions, namespace, name, size, nil, gr))
+	err := wait.PollImmediate(updateRetryInterval, updateRetryTimeout, cond)
+	if err == nil {
+		err = kubectl.WaitForScaleHasDesiredReplicas(scalesGetter, gr, name, namespace, size, waitForReplicas)
+	}
+	if err != nil {
+		return fmt.Errorf("Error while scaling %s to %d replicas: %v", name, size, err)
+	}
+	return nil
+}