Ensure the namespace is listed in the file created during mass-branching
    
    This file is generated when we branch the components in PDC for the new
    branch.
    Currently it was only returning the name of the artifact without their
    namespace, so if you have 'cockpit' you had no idea if you're speaking
    about the rpm, the container or the module.
    This commit fixes that.
    
    Signed-off-by: Pierre-Yves Chibon <pingou@pingoured.fr>