[nancy/grue] Update MAC address on grue-1 iDrac

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

@@ -179,7 +179,7 @@
       "interface": "Ethernet",
       "ip": "172.17.77.1",
       "kavlan": false,
-      "mac": "f4:02:70:c8:44:e8",
+      "mac": "4c:d9:8f:32:51:4e",
       "management": true,
       "mountable": false,
       "mounted": false,