Enable SyncerTunnel featuregate by default

pkg/features/kcp_features.go

@@ -97,7 +97,7 @@ func (f *kcpFeatureGate) Type() string {
 // here. The features will be available throughout Kubernetes binaries.
 var defaultGenericControlPlaneFeatureGates = map[featuregate.Feature]featuregate.FeatureSpec{
 	LocationAPI:  {Default: true, PreRelease: featuregate.Alpha},
-	SyncerTunnel: {Default: false, PreRelease: featuregate.Alpha},
+	SyncerTunnel: {Default: true, PreRelease: featuregate.Alpha},
 
 	// inherited features from generic apiserver, relisted here to get a conflict if it is changed
 	// unintentionally on either side:

test/e2e/syncer/tunnels_test.go

@@ -35,13 +35,10 @@ import (
 	metav1 "k8s.io/apimachinery/pkg/apis/meta/v1"
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/wait"
-	utilfeature "k8s.io/apiserver/pkg/util/feature"
 	"k8s.io/client-go/kubernetes"
-	featuregatetesting "k8s.io/component-base/featuregate/testing"
 
 	workloadv1alpha1 "github.com/kcp-dev/kcp/pkg/apis/workload/v1alpha1"
 	kcpclientset "github.com/kcp-dev/kcp/pkg/client/clientset/versioned/cluster"
-	"github.com/kcp-dev/kcp/pkg/features"
 	"github.com/kcp-dev/kcp/pkg/syncer/shared"
 	"github.com/kcp-dev/kcp/test/e2e/framework"
 )
@@ -54,8 +51,6 @@ func TestSyncerTunnel(t *testing.T) {
 		t.Skip("Test requires a pcluster")
 	}
 
-	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.SyncerTunnel, true)()
-
 	tokenAuthFile := framework.WriteTokenAuthFile(t)
 	upstreamServer := framework.PrivateKcpServer(t, framework.WithCustomArguments(framework.TestServerArgsWithTokenAuthFile(tokenAuthFile)...))
 	t.Log("Creating an organization")
@@ -287,8 +282,6 @@ func TestSyncerTunnelFilter(t *testing.T) {
 	t.Parallel()
 	framework.Suite(t, "transparent-multi-cluster")
 
-	defer featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.SyncerTunnel, true)()
-
 	ctx, cancelFunc := context.WithCancel(context.Background())
 	t.Cleanup(cancelFunc)