[bordeaux] network api - setting st-bordemer proper model

data/grid5000/sites/bordeaux/network_equipments/st-bordemer.json

@@ -31,7 +31,7 @@
       "rate": 1000000000
     }
   ],
-  "model": "Cisco 3750",
+  "model": "Cisco WS-C3750G-24TS",
   "routes": {
 
   },

generators/input/sites/bordeaux/net-links/st-bordemer.yaml

 --- 
 st-bordemer: 
-  model: Cisco 3750
+  model: Cisco WS-C3750G-24TS
   kind: switch
   site: bordeaux
   snmp_community: public