Fix dev-data.py imports
    
    Traceback (most recent call last):

      File "dev-data.py", line 592, in <module>

        eng, meta = init_database()

      File "dev-data.py", line 48, in init_database

        engine = pagure.lib.query.create_engine('%s' % DB_URL, echo=True)

    AttributeError: 'module' object has no attribute 'create_engine'