[rennes][networks] change gw entry to production IP

data/grid5000/sites/rennes/network_equipments/gw.json

@@ -23,7 +23,7 @@
       "uid": "swcore-01-rba"
     }
   },
-  "ip": "172.17.111.211",
+  "ip": "172.16.111.254",
   "ip6": "2001:660:4406:700::ffff:ffff",
   "kind": "router",
   "linecards": [

input/grid5000/sites/rennes/networks/gw-rennes.yaml

@@ -6,7 +6,7 @@ gw:
   managed_by_us: true
   site: rennes
   snmp_community: public
-  ip: 172.17.111.211
+  ip: 172.16.111.254
   ip6: 2001:660:4406:700::ffff:ffff
   alias:
     - gw-rennes