Change Details

Update PowerDNS recursor to 4.2 series

Update PowerDNS recursor to 4.2 series https://blog.powerdns.com/2019/02/01/changes-in-the-powerdns-recursor-4-2-0/

Update PowerDNS recursor to 4.2 series https://blog.powerdns.com/2019/02/01/changes-in-the-powerdns-recursor-4-2-0/