Update to test scripts to work with both ModemManager and Cromo

test/mm-set-carrier

Index: test/mm-set-carrier
diff --git a/test/mm-set-carrier b/test/mm-set-carrier
index e8d6d47d0dd460449d106d8d66abfb43e6cffcfe..ebaa5d67d2fdc114b3d450654bb807d0c267b7c4 100644
--- a/test/mm-set-carrier
+++ b/test/mm-set-carrier
@@ -1,5 +1,9 @@
 #!/usr/bin/python
 
+# Copyright (c) 2011 The Chromium OS Authors. All rights reserved.
+# Use of this source code is governed by a BSD-style license that can be
+# found in the LICENSE file.
+
 import dbus
 import mm
 import sys
@@ -19,7 +23,6 @@ if len(sys.argv) < 3:
 else:
 	modem_pattern = sys.argv[2]
 
-manager = mm.ModemManager()
-target = mm.PickOneModem(manager, modem_pattern)
-gobi_modem = manager.GobiModem(target)
+path = mm.PickOneModem(modem_pattern)
+gobi_modem = manager.GobiModem(path)
 gobi_modem.SetCarrier(carrier)