Check if resources implement scale in disruption controller

cmd/kube-controller-manager/app/core_test.go

@@ -101,6 +101,7 @@ func TestController_DiscoveryError(t *testing.T) {
 		"GarbageCollectorController":       startGarbageCollectorController,
 		"EndpointSliceController":          startEndpointSliceController,
 		"EndpointSliceMirroringController": startEndpointSliceMirroringController,
+		"PodDisruptionBudgetController":    startDisruptionController,
 	}
 
 	tcs := map[string]struct {

cmd/kube-controller-manager/app/policy.go

@@ -67,6 +67,7 @@ func startDisruptionController(ctx ControllerContext) (http.Handler, bool, error
 		client,
 		ctx.RESTMapper,
 		scaleClient,
+		client.Discovery(),
 	).Run(ctx.Stop)
 	return nil, true, nil
 }