jjb: submit-project fix default value for packagefilter
jjb: submit-project fix default value for packagefilter

The default is an empty string and means that no filtering
will happen. The old default "None" is no longer used and
supported.

aspiers/automation,SUSE-Cloud/automation,gosipyan/automation,SUSE-Cloud/automation,aspiers/automation,aspiers/automation,gosipyan/automation,gosipyan/automation,aspiers/automation,SUSE-Cloud/automation,gosipyan/automation,SUSE-Cloud/automation