Raise an error if server flagged as local but should not

If the controller is not started with --local but the server ID
is local it's raise an error.

gns3server/modules/vm_error.py

@@ -20,7 +20,7 @@ class VMError(Exception):
 
     def __init__(self, message, original_exception=None):
 
-        Exception.__init__(self, message)
+        super().__init__(message)
         if isinstance(message, Exception):
             message = str(message)
         self._message = message