Comment 7 for bug 2012944

The above patch fixes in a dirty way the dry-run problem to overwrite the cfg option from CLI:
$ neutron-remove-duplicated-port-bindings --config-dir /etc/neutron --neutron_cli_opts-dry_run

but I can't make logging work, I even can't find where the log will be, I have a feeling that logging cfg should be parsed but there are several --debug options and I have to handle that, and even after I am not sure I am at the end.