egress_selector.go: register konnectivity-client metrics.

This registers new metrics provided by kubernetes/kubernetes#114789.

Kubernetes-commit: 91228a5749ca4cc370fb6b0fbea6a2836cc93c10

pkg/server/egressselector/egress_selector.go

@@ -36,13 +36,18 @@ import (
 	utilnet "k8s.io/apimachinery/pkg/util/net"
 	"k8s.io/apiserver/pkg/apis/apiserver"
 	egressmetrics "k8s.io/apiserver/pkg/server/egressselector/metrics"
+	compbasemetrics "k8s.io/component-base/metrics"
 	"k8s.io/component-base/tracing"
 	"k8s.io/klog/v2"
 	client "sigs.k8s.io/apiserver-network-proxy/konnectivity-client/pkg/client"
 )
 
 var directDialer utilnet.DialFunc = http.DefaultTransport.(*http.Transport).DialContext
 
+func init() {
+	client.Metrics.RegisterMetrics(compbasemetrics.NewKubeRegistry().Registerer())
+}
+
 // EgressSelector is the map of network context type to context dialer, for network egress.
 type EgressSelector struct {
 	egressToDialer map[EgressType]utilnet.DialFunc