[luxembourg][vianden] Fix wrong mac address for vianden-1

data/grid5000/sites/luxembourg/clusters/vianden/nodes/vianden-1.json

@@ -44,7 +44,7 @@
       "ip": "172.16.178.1",
       "ip6": "2001:660:4406:300:3::1",
       "kavlan": false,
-      "mac": "c4:cb:e1:c8:54:06",
+      "mac": "d4:04:e6:c5:88:60",
       "management": false,
       "mountable": true,
       "mounted": true,

input/grid5000/sites/luxembourg/clusters/vianden/nodes/vianden-1.yaml

@@ -57,7 +57,7 @@ vianden-1:
       driver: mlx_core
       name: enp1s0f0np0
       rate: 10000000000
-      mac: c4:cb:e1:c8:54:06
+      mac: d4:04:e6:c5:88:60
       ip: 172.16.178.1
   storage_devices:
     disk0: