[lyon] network api - setting gw model to ExtremeXOS

data/grid5000/sites/lyon/network_equipments/aspen-8810.json

@@ -373,7 +373,7 @@
       "rate": 1000000000
     }
   ],
-  "model": "Foundry FES-X 448",
+  "model": "ExtremeXOS version 12.1.3.14",
   "routes": {
 
   },

generators/input/sites/lyon/net-links/aspen-8810.yaml

 --- 
 aspen-8810: 
-  model: Foundry FES-X 448
+  model: ExtremeXOS version 12.1.3.14
   kind: router
   site: lyon
   snmp_community: public