Comment 3 for bug 1816107

Now we have two commands that are related to migrations -- db_sync to migrate and db_version to show the current version. It works OK with sqlalchemy-migrate, but not with Alembic that we will be using. What needs to be done is to create a set of commands - "db upgrade/downgrade/stamp/revision/version". It will comply with alembic commands and with oslo.db migration_cli interface.