Switch cluster trust bundle e2e tests to generic alpha feature + feature gates

This relies on WithFeatureGate adding [Feature:OffByDefault]. Without that, the
test would start to run in jobs which don't enable the feature.

Author: liggitt

test/e2e/auth/projected_clustertrustbundle.go

@@ -39,7 +39,7 @@ import (
 	"k8s.io/apimachinery/pkg/util/uuid"
 	"k8s.io/apimachinery/pkg/util/wait"
 	podutil "k8s.io/kubernetes/pkg/api/v1/pod"
-	"k8s.io/kubernetes/test/e2e/feature"
+	"k8s.io/kubernetes/pkg/features"
 	"k8s.io/kubernetes/test/e2e/framework"
 	e2epodoutput "k8s.io/kubernetes/test/e2e/framework/pod/output"
 	imageutils "k8s.io/kubernetes/test/utils/image"
@@ -57,7 +57,7 @@ const (
 	noSignerKey       = "no-signer"
 )
 
-var _ = SIGDescribe(feature.ClusterTrustBundle, feature.ClusterTrustBundleProjection, func() {
+var _ = SIGDescribe(framework.WithFeatureGate(features.ClusterTrustBundle), framework.WithFeatureGate(features.ClusterTrustBundleProjection), func() {
 	f := framework.NewDefaultFramework("projected-clustertrustbundle")
 	f.NamespacePodSecurityLevel = admissionapi.LevelBaseline
 

test/e2e/feature/feature.go

@@ -60,12 +60,6 @@ var (
 	// Owner: sig-autoscaling
 	ClusterSizeAutoscalingScaleUp = framework.WithFeature(framework.ValidFeatures.Add("ClusterSizeAutoscalingScaleUp"))
 
-	// TODO: document the feature (owning SIG, when to use this feature for a test)
-	ClusterTrustBundle = framework.WithFeature(framework.ValidFeatures.Add("ClusterTrustBundle"))
-
-	// TODO: document the feature (owning SIG, when to use this feature for a test)
-	ClusterTrustBundleProjection = framework.WithFeature(framework.ValidFeatures.Add("ClusterTrustBundleProjection"))
-
 	// TODO: document the feature (owning SIG, when to use this feature for a test)
 	ClusterUpgrade = framework.WithFeature(framework.ValidFeatures.Add("ClusterUpgrade"))