Ticket 48947 - Update default password hash to SSHA512
    
    Bug Description:  Update the default password hash in DS to SSHA512
    
    Fix Description:  This change fixes some of the macro placements, and makes
    it easier to upgrade in the future. If we do the update, and the admin has not
    set a hash in dse.ldif this will transparently upgrade the hashtype!
    
    https://fedorahosted.org/389/ticket/48947
    
    Author: wibrown
    
    Review by: mreynolds, nhosoi (Thanks)