main.go: add flags for webhook cert-name and -key

main.go

@@ -200,10 +200,16 @@ func InitFlags(fs *pflag.FlagSet) {
 		"Maximum number of queries that should be allowed in one burst from the cluster cache tracker clients to the Kubernetes API server of workload clusters.")
 
 	fs.IntVar(&webhookOpts.Port, "webhook-port", defaultWebhookPort,
-		"Webhook Server port")
+		"Webhook Server port.")
 
 	fs.StringVar(&webhookOpts.CertDir, "webhook-cert-dir", "/tmp/k8s-webhook-server/serving-certs/",
-		"Webhook cert dir, only used when webhook-port is specified.")
+		"Webhook cert dir.")
+
+	fs.StringVar(&webhookOpts.CertName, "webhook-cert-name", "tls.crt",
+		"Webhook cert name.")
+
+	fs.StringVar(&webhookOpts.KeyName, "webhook-key-name", "tls.key",
+		"Webhook key name.")
 
 	fs.StringVar(&managerOpts.HealthProbeBindAddress, "health-addr", ":9440",
 		"The address the health endpoint binds to.",