move util/metrics to component-base

Signed-off-by: Yassine TIJANI <ytijani@vmware.com>

pkg/controller/namespace/namespace_controller.go

@@ -33,9 +33,9 @@ import (
 	"k8s.io/client-go/metadata"
 	"k8s.io/client-go/tools/cache"
 	"k8s.io/client-go/util/workqueue"
+	"k8s.io/component-base/metrics/prometheus/ratelimiter"
 	"k8s.io/kubernetes/pkg/controller"
 	"k8s.io/kubernetes/pkg/controller/namespace/deletion"
-	"k8s.io/kubernetes/pkg/util/metrics"
 
 	"k8s.io/klog"
 )
@@ -78,7 +78,7 @@ func NewNamespaceController(
 	}
 
 	if kubeClient != nil && kubeClient.CoreV1().RESTClient().GetRateLimiter() != nil {
-		metrics.RegisterMetricAndTrackRateLimiterUsage("namespace_controller", kubeClient.CoreV1().RESTClient().GetRateLimiter())
+		ratelimiter.RegisterMetricAndTrackRateLimiterUsage("namespace_controller", kubeClient.CoreV1().RESTClient().GetRateLimiter())
 	}
 
 	// configure the namespace informer event handlers