adding route53-v6
adding route53-v6

modified constants DYNDNS_PROVIDER_VALUES and DYNDNS_PROVIDER_DESCRIPTIONS to add route 53 v6.
NewEraCracker/pfsense,NewEraCracker/pfsense,pfsense/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,phil-davis/pfsense,phil-davis/pfsense,dennypage/pfsense,pfsense/pfsense,dennypage/pfsense,dennypage/pfsense,pfsense/pfsense,phil-davis/pfsense,ptorsten/pfsense,NewEraCracker/pfsense,ptorsten/pfsense,dennypage/pfsense,phil-davis/pfsense,pfsense/pfsense