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!
Review by: mreynolds, nhosoi (Thanks)