Migrate to new networking.k8s.io/v1beta1 package

internal/ingress/annotations/class/main.go

@@ -17,8 +17,9 @@ limitations under the License.
 package class
 
 import (
-	extensions "k8s.io/api/extensions/v1beta1"
 	"k8s.io/klog"
+
+	networking "k8s.io/api/networking/v1beta1"
 )
 
 const (
@@ -41,7 +42,7 @@ var (
 // IsValid returns true if the given Ingress either doesn't specify
 // the ingress.class annotation, or it's set to the configured in the
 // ingress controller.
-func IsValid(ing *extensions.Ingress) bool {
+func IsValid(ing *networking.Ingress) bool {
 	ingress, ok := ing.GetAnnotations()[IngressKey]
 	if !ok {
 		klog.V(3).Infof("annotation %v is not present in ingress %v/%v", IngressKey, ing.Namespace, ing.Name)

internal/ingress/annotations/class/main_test.go

@@ -20,7 +20,7 @@ import (
 	"testing"
 
 	api "k8s.io/api/core/v1"
-	extensions "k8s.io/api/extensions/v1beta1"
+	networking "k8s.io/api/networking/v1beta1"
 	meta_v1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 )
 
@@ -47,7 +47,7 @@ func TestIsValidClass(t *testing.T) {
 		{"custom", "nginx", "nginx", false},
 	}
 
-	ing := &extensions.Ingress{
+	ing := &networking.Ingress{
 		ObjectMeta: meta_v1.ObjectMeta{
 			Name:      "foo",
 			Namespace: api.NamespaceDefault,