82374d6 avoid precaching users if not worthwhile

Authored and Committed by nphilipp 4 years ago
    avoid precaching users if not worthwhile
    
    If the user specifies individual projects and doesn't need to map email
    addresses back to users, caching user <-> BZ email addresses is too much
    of an overhead.
    
    fixes: #22
    
    Signed-off-by: Nils Philippsen <nils@redhat.com>