Set label on metal load balancer to allow dns (#292)

Author: gonzolino

charts/internal/seed-controlplane/charts/metal-load-balancer-controller-manager/templates/deployment.yaml

@@ -21,6 +21,7 @@ spec:
         gardener.cloud/role: controlplane
         app: kubernetes
         role: metal-load-balancer-controller-manager
+        networking.gardener.cloud/to-dns: allowed
         networking.resources.gardener.cloud/to-kube-apiserver-tcp-443: allowed
     spec:
       automountServiceAccountToken: false