Comment 1 for bug 1612433

To have migration autogenerated we need to pass --autogenerate and --expand/contract: not allowed with argument --autogenerate.

.tox/py27/bin/neutron-db-manage --config-file /etc/neutron/neutron.conf revision -m 'test' --autogenerate
  Running revision for neutron ...
INFO [alembic.runtime.migration] Context impl PostgresqlImpl.
INFO [alembic.runtime.migration] Will assume transactional DDL.
INFO [alembic.ddl.postgresql] Detected sequence named 'nsxv_edge_vnic_bindings_vnic_index_seq' as owned by integer column 'nsxv_edge_vnic_bindings(vnic_index)', assuming $ERIAL and omitting
INFO [alembic.ddl.postgresql] Detected sequence named 'ml2_ucsm_port_profiles_vlan_id_seq' as owned by integer column 'ml2_ucsm_port_profiles(vlan_id)', assuming SERIAL a$d omitting
INFO [alembic.ddl.postgresql] Detected sequence named 'routerrules_id_seq' as owned by integer column 'routerrules(id)', assuming SERIAL and omitting
INFO [alembic.ddl.postgresql] Detected sequence named 'cisco_ml2_nexus_nve_vni_seq' as owned by integer column 'cisco_ml2_nexus_nve(vni)', assuming SERIAL and omitting
INFO [alembic.ddl.postgresql] Detected sequence named 'cisco_ml2_nexusport_bindings_binding_id_seq' as owned by integer column 'cisco_ml2_nexusport_bindings(binding_id)', assuming SERIAL and omitting
INFO [alembic.ddl.postgresql] Detected sequence named 'ha_router_vrid_allocations_vr_id_seq' as owned by integer column 'ha_router_vrid_allocations(vr_id)', assuming SERI$L and omitting
INFO [alembic.autogenerate.compare] Detected added column 'ha_router_agent_port_bindings.test'
  Generating /opt/stack/neutron/neutron/db/migration/alembic_migrations/versions/newton/expand/ce2aa5e76b04_test.py ... done
  OK

So, I think this bug is not valid as if we use autogenerate, it will generate migration in expand or contract branch itself, and --expand/contract are used for creation just empty migrations.