feat!: switch from ingress-nginx to traefik

tmpl/cluster-settings.yaml

@@ -6,4 +6,4 @@ metadata:
   namespace: flux-system
 data:
   METALLB_LB_RANGE: ${BOOTSTRAP_METALLB_LB_RANGE}
-  INGRESS_NGINX_LB: ${BOOTSTRAP_INGRESS_NGINX_LB}
+  SVC_TRAEFIK_ADDR: ${BOOTSTRAP_SVC_TRAEFIK_ADDR}