Use correct _definitions in old_clients/_client

Author: cderici

juju/client/old_clients/_client.py

@@ -1,7 +1,8 @@
 # DO NOT CHANGE THIS FILE! This file is auto-generated by facade.py.
 # Changes will be overwritten/lost when the file is regenerated.
 
-from juju.client._definitions import *
+from juju.client.old_clients._definitions import *
+
 
 from juju.client.old_clients import _client2, _client1, _client3, _client4, _client5, _client8, _client7, _client9, _client10, _client6, _client12, _client11, _client13, _client15, _client16, _client17, _client18