
Since Python 3.4, argparse has been printing the version on stdout rather than on stderr as it used to. We should fix this now because: - this is an issue when packaging oslo-config in Debian Sid, which uses Python 3.4; - it will be needed when Openstack switches to 3.4 anyway. Change-Id: I6a84009acb8621d62465c4cd2573200a07b6b4ab