[grvingt] Updat mac address of grvingt-64

data/grid5000/sites/nancy/clusters/grvingt/nodes/grvingt-64.json

@@ -7,11 +7,11 @@
     "platform_type": "x86_64"
   },
   "bios": {
-    "release_date": "11/27/2019",
+    "release_date": "05/06/2020",
     "vendor": "Dell Inc.",
-    "version": "2.4.8"
+    "version": "2.7.7"
   },
-  "bmc_version": "4.00.00.00",
+  "bmc_version": "4.20.20.20",
   "chassis": {
     "manufacturer": "Dell Inc.",
     "name": "PowerEdge C6420",
@@ -129,7 +129,7 @@
       "interface": "Ethernet",
       "ip": "172.17.76.64",
       "kavlan": false,
-      "mac": "50:9a:4c:84:51:10",
+      "mac": "6c:2b:59:7a:76:3c",
       "management": true,
       "mountable": false,
       "mounted": false,