[lille,nancy] Change alias apt to packages.lille instead of apt-global.nancy

data/grid5000/sites/lille/servers/packages.json

 {
+  "alias": [
+    "apt",
+    "apt-global"
+  ],
   "kind": "virtual",
   "network_adapters": {
     "default": {

data/grid5000/sites/nancy/servers/apt-global.json

 {
-  "alias": [
-    "apt"
-  ],
   "kind": "virtual",
   "network_adapters": {
     "default": {

input/grid5000/sites/lille/servers/virtual.yaml

@@ -259,6 +259,9 @@ bugzilla:
   network_adapters: {default: {ip: 172.16.47.151}}
 packages:
   kind: virtual
+  alias:
+    - apt
+    - apt-global
   network_adapters:
     default:
       ip: 172.16.47.152

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

@@ -27,7 +27,6 @@ proxy:
   network_adapters: {default: {ip: 172.16.79.108}}
 apt-global:
   kind: virtual
-  alias: [apt]
   network_adapters: {default: {ip: 172.16.79.109}}
 puppet:
   kind: virtual