Downgrade Kubernetes vendor version

Multus community decide that multus support the Kubernetes that
Kubernetes community supports, so changed vendor code to the
oldest version of currently supported.

vendor/k8s.io/client-go/kubernetes/scheme/register.go

@@ -34,12 +34,13 @@ import (
 	autoscalingv2beta2 "k8s.io/api/autoscaling/v2beta2"
 	batchv1 "k8s.io/api/batch/v1"
 	batchv1beta1 "k8s.io/api/batch/v1beta1"
+	batchv2alpha1 "k8s.io/api/batch/v2alpha1"
 	certificatesv1 "k8s.io/api/certificates/v1"
 	certificatesv1beta1 "k8s.io/api/certificates/v1beta1"
 	coordinationv1 "k8s.io/api/coordination/v1"
 	coordinationv1beta1 "k8s.io/api/coordination/v1beta1"
 	corev1 "k8s.io/api/core/v1"
-	discoveryv1 "k8s.io/api/discovery/v1"
+	discoveryv1alpha1 "k8s.io/api/discovery/v1alpha1"
 	discoveryv1beta1 "k8s.io/api/discovery/v1beta1"
 	eventsv1 "k8s.io/api/events/v1"
 	eventsv1beta1 "k8s.io/api/events/v1beta1"
@@ -51,7 +52,6 @@ import (
 	nodev1 "k8s.io/api/node/v1"
 	nodev1alpha1 "k8s.io/api/node/v1alpha1"
 	nodev1beta1 "k8s.io/api/node/v1beta1"
-	policyv1 "k8s.io/api/policy/v1"
 	policyv1beta1 "k8s.io/api/policy/v1beta1"
 	rbacv1 "k8s.io/api/rbac/v1"
 	rbacv1alpha1 "k8s.io/api/rbac/v1alpha1"
@@ -88,12 +88,13 @@ var localSchemeBuilder = runtime.SchemeBuilder{
 	autoscalingv2beta2.AddToScheme,
 	batchv1.AddToScheme,
 	batchv1beta1.AddToScheme,
+	batchv2alpha1.AddToScheme,
 	certificatesv1.AddToScheme,
 	certificatesv1beta1.AddToScheme,
 	coordinationv1beta1.AddToScheme,
 	coordinationv1.AddToScheme,
 	corev1.AddToScheme,
-	discoveryv1.AddToScheme,
+	discoveryv1alpha1.AddToScheme,
 	discoveryv1beta1.AddToScheme,
 	eventsv1.AddToScheme,
 	eventsv1beta1.AddToScheme,
@@ -105,7 +106,6 @@ var localSchemeBuilder = runtime.SchemeBuilder{
 	nodev1.AddToScheme,
 	nodev1alpha1.AddToScheme,
 	nodev1beta1.AddToScheme,
-	policyv1.AddToScheme,
 	policyv1beta1.AddToScheme,
 	rbacv1.AddToScheme,
 	rbacv1beta1.AddToScheme,