traefik: wire LB service to custom deployment

infrastructure/traefik/traefik-service-lb.yaml

@@ -3,7 +3,7 @@ apiVersion: v1
 kind: Service
 metadata:
   name: traefik
-  namespace: kube-system
+  namespace: traefik
   annotations:
     metallb.universe.tf/address-pool: communication-pool
 spec:
@@ -20,5 +20,4 @@ spec:
       targetPort: websecure
       protocol: TCP
   selector:
-    app.kubernetes.io/instance: traefik-kube-system
-    app.kubernetes.io/name: traefik
+    app: traefik