[nancy] Change adminfront from srv3 to pve-1

data/grid5000/sites/nancy/servers/pve-1.json

 {
   "alias": [
-    "ntp"
+    "ntp",
+    "adminfront"
   ],
   "kind": "physical",
   "network_adapters": {

data/grid5000/sites/nancy/servers/srv3.json

 {
   "alias": [
-    "wattmetre",
-    "adminfront"
+    "wattmetre"
   ],
   "kind": "physical",
   "network_adapters": {

input/grid5000/sites/nancy/servers/physical.yaml

@@ -115,7 +115,7 @@ srv-data3:
 
 srv3:
   kind: physical
-  alias: [wattmetre, adminfront]
+  alias: [wattmetre]
   warranty: 2026-07
   serial: FKHBSY2
   network_adapters:
@@ -135,7 +135,7 @@ srv3:
 
 pve-1:
   kind: physical
-  alias: [ntp]
+  alias: [ntp, adminfront]
   serial: CZJ24220C6
   network_adapters:
     default: