Follow new infra setup for translations, see spec
http://specs.openstack.org/openstack-infra/infra-specs/specs/translation_setup.html
for full details.
This basically renames
oslo.versionedobjects/locale/oslo.versionedobjects.pot to
oslo_versionedobjects/locale/oslo_versionedobjects.pot. For this we need to update
setup.cfg.
Update also domain name in _i18n.py.
Change-Id: Idf4612ca6833b516576e169ad9ff0d111d75112e
Remove extraneous utility code and tests.
Skip tests related to remote object verification until we can rewrite
them (see the adopt-oslo-versionedobjects spec for details).
Fix pep8 errors.
Update requirements.
Set python's hash seed in tox.ini for tests that compare things that
might come out in a different order.
