Ticket 102 - referral support
    
    Bug Description:  We need support for smart referrals to test
    managedsait controls.
    
    Fix Description:  Add support for referral objects and a test to
    demonstrate they work.
    
    https://pagure.io/lib389/issue/102
    
    Author: wibrown
    
    Review by: spichugi (Thank you!)