Ticket 47627 - changelog iteration should ignore cleaned rids when getting the minCSN
    
    Description:  If a change is not found in the change log the server will look for a min csn
                  to start the replay. This minCSN should not come from a cleaned RUV element.
    
    https://fedorahosted.org/389/ticket/47627
    
    Reviewed by: rmeggins & lkrispenz(Thanks!!)