Updated openstack/openstack
Project: openstack/oslo-incubator  a04ce8a5338bebd80fa5d63700794730d5cc4bcc

Mark db code as obsolete

oslo.db has been graduated from oslo-incubator, so we should
mark common database code as obsolete.

blueprint oslo-db-lib

Change-Id: I0aa83feab0f6ece211688da683c9a6db0e4fcb05