Ticket 47502 - updates to ruv entry are written to retro changelog
    
    Bug Description:  if replication and retro changelog are enabled
    			the changes to the tombstone ruv are written
    			to the retro changelog
    
    Fix Description:   in replica_write_ruv this explicitely prevented by
    			setting the OP_FLAG_TOMBSTONE_ENTRY - do this
    			also in replica_replace_ruv_tombstone
    
    https://fedorahosted.org/389/ticket/47502
    
    Reviewed by: RichM