`bob_dbmanage.py banca dumplist` does not work

Created by: anjos

I just downloaded the latest version on PyPI for this database and realized that the output of dumplist is totally blank. How to reproduce:

1. Use the latest on PyPI (xbob.db.banca-1.2.1)

2. Issue: bob_dbmanage.py banca dumplist

Result: nothing is printed

Expected: a file list is printed.

N.B.: Selecting protocols or the search does not change the output. The command above works as expected for other databases. E.g. xm2vts.

N.B.: We should have a test unit for this command. I'm surprised the output is not checked.