Updated openstack/openstack
Project: openstack/python-swiftclient  fe5e8a75747b619cd57f5d401c7c3e49358a4dfc

Declare that we support Python 3

Note that this should not land until we figure out why `tox -e py33` doesn't
actually run any tests.

Change-Id: Id4e080cfbfca45b3bf7ed81b03a31414495a1348