Automatic merge from submit-queue (batch tested with PRs 53190, 54790, 54445, 52607, 54801). If you want to cherry-pick this change to another branch, please follow the instructions <a href="https://github.com/kubernetes/community/blob/master/contributors/devel/cherry-picks.md">here</a>.

optimize speed of integration test:rc

**What this PR does / why we need it**:
optimize the speed of integration test for rc

**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes #

**Special notes for your reviewer**:
```shell
make test-integration WHAT=./test/integration/replicaset GOFLAGS="-v" KUBE_TEST_ARGS="-run ^TestUpdateSelectorToRemoveControllerRef$"

**Before modification:**

Replicates test:
--- PASS: TestUpdateSelectorToRemoveControllerRef (32.70s)
	replicaset_test.go:377: patched rs = &v1beta1.ReplicaSet{TypeMeta:v1.TypeMeta{Kind:"", APIVersion:""}, ObjectMeta:v1.ObjectMeta{Name:"rs", GenerateName:"", Namespace:"rs-update-selector-to-remove-controllerref", SelfLink:"/apis/extensions/v1beta1/namespaces/rs-update-selector-to-remove-controllerref/replicasets/rs", UID:"12cb97ec-9b59-11e7-a829-186590dec5c5", ResourceVersion:"100", Generation:2, CreationTimestamp:v1.Time{Time:time.Time{wall:0x0, ext:63641216052, loc:(*time.Location)(0x91f6800)}}, DeletionTimestamp:(*v1.Time)(nil), DeletionGracePeriodSeconds:(*int64)(nil), Labels:map[string]string{"name":"test"}, Annotations:map[string]string(nil), OwnerReferences:[]v1.OwnerReference(nil), Initializers:(*v1.Initializers)(nil), Finalizers:[]string(nil), ClusterName:""}, Spec:v1beta1.ReplicaSetSpec{Replicas:(*int32)(0xc4227a7ad4), MinReadySeconds:0, Selector:(*v1.LabelSelector)(0xc42035dfe0), Template:v1.PodTemplateSpec{ObjectMeta:v1.ObjectMeta{Name:"", GenerateName:"", Namespace:"", SelfLink:"", UID:"", ResourceVersion:"", Generation:0, CreationTimestamp:v1.Time{Time:time.Time{wall:0x0, ext:0, loc:(*time.Location)(nil)}}, DeletionTimestamp:(*v1.Time)(nil), DeletionGracePeriodSeconds:(*int64)(nil), Labels:map[string]string{"name":"test", "uniqueKey":"1"}, Annotations:map[string]string(nil), OwnerReferences:[]v1.OwnerReference(nil), Initializers:(*v1.Initializers)(nil), Finalizers:[]string(nil), ClusterName:""}, Spec:v1.PodSpec{Volumes:[]v1.Volume(nil), InitContainers:[]v1.Container(nil), Containers:[]v1.Container{v1.Container{Name:"fake-name", Image:"fakeimage", Command:[]string(nil), Args:[]string(nil), WorkingDir:"", Ports:[]v1.ContainerPort(nil), EnvFrom:[]v1.EnvFromSource(nil), Env:[]v1.EnvVar(nil), Resources:v1.ResourceRequirements{Limits:v1.ResourceList(nil), Requests:v1.ResourceList(nil)}, VolumeMounts:[]v1.VolumeMount(nil), LivenessProbe:(*v1.Probe)(nil), ReadinessProbe:(*v1.Probe)(nil), Lifecycle:(*v1.Lifecycle)(nil), TerminationMessagePath:"/dev/termination-log", TerminationMessagePolicy:"File", ImagePullPolicy:"Always", SecurityContext:(*v1.SecurityContext)(nil), Stdin:false, StdinOnce:false, TTY:false}}, RestartPolicy:"Always", TerminationGracePeriodSeconds:(*int64)(0xc4227a7b90), ActiveDeadlineSeconds:(*int64)(nil), DNSPolicy:"ClusterFirst", NodeSelector:map[string]string(nil), ServiceAccountName:"", DeprecatedServiceAccount:"", AutomountServiceAccountToken:(*bool)(nil), NodeName:"", HostNetwork:false, HostPID:false, HostIPC:false, SecurityContext:(*v1.PodSecurityContext)(0xc422fa6380), ImagePullSecrets:[]v1.LocalObjectReference(nil), Hostname:"", Subdomain:"", Affinity:(*v1.Affinity)(nil), SchedulerName:"default-scheduler", Tolerations:[]v1.Toleration(nil), HostAliases:[]v1.HostAlias(nil), PriorityClassName:"", Priority:(*int32)(nil)}}}, Status:v1beta1.ReplicaSetStatus{Replicas:2, FullyLabeledReplicas:2, ReadyReplicas:0, AvailableReplicas:0, ObservedGeneration:1, Conditions:[]v1beta1.ReplicaSetCondition(nil)}}
PASS
ok  	k8s.io/kubernetes/test/integration/replicaset	**32.810s**
+++ [0917 11:34:42] Cleaning up etcd
+++ [0917 11:34:42] Integration test cleanup complete


**After modification:**
--- PASS: TestUpdateSelectorToRemoveControllerRef (3.10s)
	replicaset_test.go:377: patched rs = &v1beta1.ReplicaSet{TypeMeta:v1.TypeMeta{Kind:"", APIVersion:""}, ObjectMeta:v1.ObjectMeta{Name:"rs", GenerateName:"", Namespace:"rs-update-selector-to-remove-controllerref", SelfLink:"/apis/extensions/v1beta1/namespaces/rs-update-selector-to-remove-controllerref/replicasets/rs", UID:"5b2fa66f-9b5b-11e7-bf1a-186590dec5c5", ResourceVersion:"100", Generation:2, CreationTimestamp:v1.Time{Time:time.Time{wall:0x0, ext:63641217033, loc:(*time.Location)(0x91f6800)}}, DeletionTimestamp:(*v1.Time)(nil), DeletionGracePeriodSeconds:(*int64)(nil), Labels:map[string]string{"name":"test"}, Annotations:map[string]string(nil), OwnerReferences:[]v1.OwnerReference(nil), Initializers:(*v1.Initializers)(nil), Finalizers:[]string(nil), ClusterName:""}, Spec:v1beta1.ReplicaSetSpec{Replicas:(*int32)(0xc4225dd374), MinReadySeconds:0, Selector:(*v1.LabelSelector)(0xc422f08e40), Template:v1.PodTemplateSpec{ObjectMeta:v1.ObjectMeta{Name:"", GenerateName:"", Namespace:"", SelfLink:"", UID:"", ResourceVersion:"", Generation:0, CreationTimestamp:v1.Time{Time:time.Time{wall:0x0, ext:0, loc:(*time.Location)(nil)}}, DeletionTimestamp:(*v1.Time)(nil), DeletionGracePeriodSeconds:(*int64)(nil), Labels:map[string]string{"name":"test", "uniqueKey":"1"}, Annotations:map[string]string(nil), OwnerReferences:[]v1.OwnerReference(nil), Initializers:(*v1.Initializers)(nil), Finalizers:[]string(nil), ClusterName:""}, Spec:v1.PodSpec{Volumes:[]v1.Volume(nil), InitContainers:[]v1.Container(nil), Containers:[]v1.Container{v1.Container{Name:"fake-name", Image:"fakeimage", Command:[]string(nil), Args:[]string(nil), WorkingDir:"", Ports:[]v1.ContainerPort(nil), EnvFrom:[]v1.EnvFromSource(nil), Env:[]v1.EnvVar(nil), Resources:v1.ResourceRequirements{Limits:v1.ResourceList(nil), Requests:v1.ResourceList(nil)}, VolumeMounts:[]v1.VolumeMount(nil), LivenessProbe:(*v1.Probe)(nil), ReadinessProbe:(*v1.Probe)(nil), Lifecycle:(*v1.Lifecycle)(nil), TerminationMessagePath:"/dev/termination-log", TerminationMessagePolicy:"File", ImagePullPolicy:"Always", SecurityContext:(*v1.SecurityContext)(nil), Stdin:false, StdinOnce:false, TTY:false}}, RestartPolicy:"Always", TerminationGracePeriodSeconds:(*int64)(0xc4225dd3f0), ActiveDeadlineSeconds:(*int64)(nil), DNSPolicy:"ClusterFirst", NodeSelector:map[string]string(nil), ServiceAccountName:"", DeprecatedServiceAccount:"", AutomountServiceAccountToken:(*bool)(nil), NodeName:"", HostNetwork:false, HostPID:false, HostIPC:false, SecurityContext:(*v1.PodSecurityContext)(0xc423096ac0), ImagePullSecrets:[]v1.LocalObjectReference(nil), Hostname:"", Subdomain:"", Affinity:(*v1.Affinity)(nil), SchedulerName:"default-scheduler", Tolerations:[]v1.Toleration(nil), HostAliases:[]v1.HostAlias(nil), PriorityClassName:"", Priority:(*int32)(nil)}}}, Status:v1beta1.ReplicaSetStatus{Replicas:2, FullyLabeledReplicas:2, ReadyReplicas:0, AvailableReplicas:0, ObservedGeneration:1, Conditions:[]v1beta1.ReplicaSetCondition(nil)}}
PASS
ok  	k8s.io/kubernetes/test/integration/replicaset	**3.216s**
+++ [0917 11:50:33] Cleaning up etcd
+++ [0917 11:50:33] Integration test cleanup complete
```

**Release note**:

```release-note
NONE
```