[lille] Add lbertot-vm persistent VM

data/grid5000/sites/lille/servers/lbertot-vm.json

+{
+  "expire": "2021-10",
+  "kind": "virtual",
+  "network_adapters": {
+    "default": {
+      "ip": "172.16.45.14"
+    }
+  },
+  "type": "server",
+  "uid": "lbertot-vm"
+}
\ No newline at end of file

input/grid5000/sites/lille/servers/users-vm.yaml

@@ -43,3 +43,8 @@ mpoquet-vm:
  kind: virtual
  expire: 2021-12
  network_adapters: {default: {ip: 172.16.45.13}}
+
+lbertot-vm:
+ kind: virtual
+ expire: 2021-10
+ network_adapters: {default: {ip: 172.16.45.14}}