Updated openstack/openstack
Project: openstack/oslo.db  0e854f2c3960620c3cc67e3d7c108b93b2e8d60a

Use oslo.i18n

Module `gettextutils` from common code was graduated to oslo.i18n, so it
would be great if we reuse this library.

Change-Id: Ie5836b82723fc80c1d54e5e65eac8565cf905c5a