Updated openstack/openstack
Project: openstack/neutron  4489957a1e0689b06ba9c870d536dcb0b1703d32

Don't print duplicate messages on SystemExit

Don't log the error using LOG.error or LOG.exception and then
passing the same string to SystemExit since this will result in the
error being logged twice. Instead log the error and raise SystemExit(1).

Change-Id: I88b6632e6596a36a7168155dd4219e7d55078621