fix: ProviderConfig reconciler to filter usages by namespace

Signed-off-by: Konstantin Plis <plis.konstantin@gmail.com>

Author: kostyaplis

pkg/reconciler/providerconfig/reconciler.go

@@ -178,7 +178,12 @@ func (r *Reconciler) Reconcile(ctx context.Context, req reconcile.Request) (reco
 		matchingLabels[xpv1.LabelKeyProviderKind] = pc.GetObjectKind().GroupVersionKind().Kind
 	}
 
-	if err := r.client.List(ctx, l, matchingLabels); err != nil {
+	listOpts := []client.ListOption{matchingLabels}
+	if pc.GetNamespace() != "" {
+		listOpts = append(listOpts, client.InNamespace(pc.GetNamespace()))
+	}
+
+	if err := r.client.List(ctx, l, listOpts...); err != nil {
 		log.Debug(errListPCUs, "error", err)
 		r.record.Event(pc, event.Warning(reasonAccount, errors.Wrap(err, errListPCUs)))