Separated setup/arthur command parents; removed check_unload_target_defined function
Separated setup/arthur command parents; removed check_unload_target_defined function

harrystech/arthur-redshift-etl,harrystech/arthur-redshift-etl,harrystech/arthur-redshift-etl,harrystech/arthur-redshift-etl,harrystech/arthur-redshift-etl