Add directives to the documentation to bring in the docstrings from the plugins. Change-Id: I2afe1d1e4a9abfa1d3cdf85bc4008ff8f772123c
This module could be used either for: 1. Smooth transition from migrate tool to alembic 2. As standalone alembic tool
Core points: 1. Upgrade/downgrade database with usage of alembic/migrate migrations or both 2. Compatibility with oslo.config 3. The way to autogenerate new revisions or stamps