[gros][idrac] Change iDrac mac of gros-63-bmc

data/grid5000/sites/nancy/clusters/gros/nodes/gros-63.json

@@ -155,7 +155,7 @@
       "interface": "Ethernet",
       "ip": "172.17.66.63",
       "kavlan": false,
-      "mac": "54:bf:64:fb:ef:14",
+      "mac": "34:48:ed:e7:22:b4",
       "management": true,
       "mountable": false,
       "mounted": false,