Enable aggregated discovery

Kubernetes-commit: 361391117dcb5ab76dc06918d4165c6c644ad717

Author: Jefftree

pkg/features/kube_features.go

@@ -222,7 +222,7 @@ func init() {
 // To add a new feature, define a key for it above and add it here. The features will be
 // available throughout Kubernetes binaries.
 var defaultKubernetesFeatureGates = map[featuregate.Feature]featuregate.FeatureSpec{
-AggregatedDiscoveryEndpoint: {Default: false, PreRelease: featuregate.Alpha},
+AggregatedDiscoveryEndpoint: {Default: true, PreRelease: featuregate.Beta},
 
 APIListChunking: {Default: true, PreRelease: featuregate.Beta},