OpenStack Study: 86cf4d88bd3_remove_bigswitch_por.py

**** CubicPower OpenStack Study ****

def upgrade(active_plugins=None, options=None):

    if not migration.should_run(active_plugins, migration_for_plugins):

        return

    op.drop_table('portlocations')

**** CubicPower OpenStack Study ****

def downgrade(active_plugins=None, options=None):

    if not migration.should_run(active_plugins, migration_for_plugins):

        return

    op.create_table('portlocations',

                    sa.Column('port_id', sa.String(length=255),

                              primary_key=True, nullable=False),

                    sa.Column('host_id',

                              sa.String(length=255), nullable=False)

                    )