Fix for controller-runtime v0.16.3 API compat

Signed-off-by: Carlos Goncalves <cgoncalves@redhat.com>

main.go

@@ -39,9 +39,12 @@ import (
 	clientgoscheme "k8s.io/client-go/kubernetes/scheme"
 	_ "k8s.io/client-go/plugin/pkg/client/auth/gcp"
 	ctrl "sigs.k8s.io/controller-runtime"
+	"sigs.k8s.io/controller-runtime/pkg/cache"
 	"sigs.k8s.io/controller-runtime/pkg/client"
 	"sigs.k8s.io/controller-runtime/pkg/healthz"
 	"sigs.k8s.io/controller-runtime/pkg/log/zap"
+	"sigs.k8s.io/controller-runtime/pkg/metrics/server"
+	"sigs.k8s.io/controller-runtime/pkg/webhook"
 
 	sriovnetworkv1 "github.com/k8snetworkplumbingwg/sriov-network-operator/api/v1"
 	"github.com/k8snetworkplumbingwg/sriov-network-operator/controllers"
@@ -103,23 +106,23 @@ func main() {
 	namespace := os.Getenv("NAMESPACE")
 	mgr, err := ctrl.NewManager(restConfig, ctrl.Options{
 		Scheme:                 scheme,
-		MetricsBindAddress:     metricsAddr,
-		Port:                   9443,
+		Metrics:                server.Options{BindAddress: metricsAddr},
+		WebhookServer:          webhook.NewServer(webhook.Options{Port: 9443}),
 		HealthProbeBindAddress: probeAddr,
 		LeaderElection:         enableLeaderElection,
 		LeaseDuration:          &le.LeaseDuration,
 		RenewDeadline:          &le.RenewDeadline,
 		RetryPeriod:            &le.RetryPeriod,
 		LeaderElectionID:       "a56def2a.openshift.io",
-		Namespace:              namespace,
+		Cache:                  cache.Options{DefaultNamespaces: map[string]cache.Config{namespace: {}}},
 	})
 	if err != nil {
 		setupLog.Error(err, "unable to start manager")
 		os.Exit(1)
 	}
 	mgrGlobal, err := ctrl.NewManager(restConfig, ctrl.Options{
-		Scheme:             scheme,
-		MetricsBindAddress: "0",
+		Scheme:  scheme,
+		Metrics: server.Options{BindAddress: "0"},
 	})
 	if err != nil {
 		setupLog.Error(err, "unable to start global manager")