[nancy][grisou] Enable Eth4/eno2

data/grid5000/sites/nancy/clusters/grisou/nodes/grisou-1.json

@@ -207,7 +207,7 @@
       "bridged": false,
       "device": "eth4",
       "driver": "igb",
-      "enabled": false,
+      "enabled": true,
       "firmware_version": "1.67, 0x80000fab, 18.8.9",
       "interface": "Ethernet",
       "kavlan": true,