[grenoble] NFS migration from digsed to dignfs

data/grid5000/sites/grenoble/servers/dignfs.json

 {
   "alias": [
-
+    "nfs",
+    "public",
+    "home-g5k",
+    "ntp",
+    "modules"
   ],
   "kind": "physical",
   "network_adapters": {
@@ -19,4 +23,4 @@
   "type": "server",
   "uid": "dignfs",
   "warranty": "2025-10-06"
-}
\ No newline at end of file
+}

data/grid5000/sites/grenoble/servers/digsed.json

 {
   "alias": [
-    "nfs",
-    "public",
-    "home-g5k",
-    "ntp",
-    "modules"
   ],
   "kind": "physical",
   "network_adapters": {
@@ -22,4 +17,4 @@
   "type": "server",
   "uid": "digsed",
   "warranty": "2021-12-06"
-}
\ No newline at end of file
+}