Set the license uniformly to GPLv2 only.

ipa-server/xmlrpc-server/test/test_mod_python.py

@@ -2,8 +2,7 @@
 
 # This program is free software; you can redistribute it and/or
 # modify it under the terms of the GNU General Public License
-# as published by the Free Software Foundation; either version 2
-# of the License, or (at your option) any later version.
+# as published by the Free Software Foundation; version 2 only
 #
 # This program is distributed in the hope that it will be useful,
 # but WITHOUT ANY WARRANTY; without even the implied warranty of