Use SetFeatureGateEmulationVersionDuringTest() for testing

ServiceTrafficDistribution feature-flag disablement in control plane components

Ref. https://github.com/kubernetes/community/blob/master/contributors/devel/sig-architecture/feature-gates.md#disablement-tests

Author: gauravkghildiyal

test/integration/service/service_test.go

@@ -33,6 +33,7 @@ import (
 	"k8s.io/apimachinery/pkg/types"
 	"k8s.io/apimachinery/pkg/util/intstr"
 	utilrand "k8s.io/apimachinery/pkg/util/rand"
+	"k8s.io/apimachinery/pkg/util/version"
 	"k8s.io/apimachinery/pkg/util/wait"
 	"k8s.io/apimachinery/pkg/watch"
 	utilfeature "k8s.io/apiserver/pkg/util/feature"
@@ -631,6 +632,7 @@ func Test_TrafficDistribution_FeatureGateEnableDisable(t *testing.T) {
 	////////////////////////////////////////////////////////////////////////////
 
 	server1.TearDownFn()
+	featuregatetesting.SetFeatureGateEmulationVersionDuringTest(t, utilfeature.DefaultFeatureGate, version.MustParse("1.32"))
 	featuregatetesting.SetFeatureGateDuringTest(t, utilfeature.DefaultFeatureGate, features.ServiceTrafficDistribution, false)
 	server2 := kubeapiservertesting.StartTestServerOrDie(t, nil, framework.DefaultTestServerFlags(), sharedEtcd)
 	defer server2.TearDownFn()