add missing alias of api errors under test

test/integration/replicationcontroller/replicationcontroller_test.go

@@ -24,7 +24,7 @@ import (
 	"time"
 
 	"k8s.io/api/core/v1"
-	"k8s.io/apimachinery/pkg/api/errors"
+	apierrors "k8s.io/apimachinery/pkg/api/errors"
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/labels"
 	"k8s.io/apimachinery/pkg/util/uuid"
@@ -654,7 +654,7 @@ func TestPodOrphaningAndAdoptionWhenLabelsChange(t *testing.T) {
 		if err != nil {
 			// If the pod is not found, it means the RC picks the pod for deletion (it is extra)
 			// Verify there is only one pod in namespace and it has ControllerRef to the RC
-			if errors.IsNotFound(err) {
+			if apierrors.IsNotFound(err) {
 				pods := getPods(t, podClient, labelMap())
 				if len(pods.Items) != 1 {
 					return false, fmt.Errorf("Expected 1 pod in current namespace, got %d", len(pods.Items))