Add RedHat Enterprise defaults to constants
Add RedHat Enterprise defaults to constants

bsmr-misc-forks/letsencrypt,lmcro/letsencrypt,VladimirTyrin/letsencrypt,jtl999/certbot,wteiken/letsencrypt,kuba/letsencrypt,VladimirTyrin/letsencrypt,wteiken/letsencrypt,dietsche/letsencrypt,DavidGarciaCat/letsencrypt,jsha/letsencrypt,TheBoegl/letsencrypt,letsencrypt/letsencrypt,thanatos/lets-encrypt-preview,jsha/letsencrypt,brentdax/letsencrypt,kuba/letsencrypt,dietsche/letsencrypt,lmcro/letsencrypt,bsmr-misc-forks/letsencrypt,jtl999/certbot,mitnk/letsencrypt,stweil/letsencrypt,stweil/letsencrypt,thanatos/lets-encrypt-preview,TheBoegl/letsencrypt,letsencrypt/letsencrypt,twstrike/le_for_patching,mitnk/letsencrypt,DavidGarciaCat/letsencrypt,twstrike/le_for_patching,brentdax/letsencrypt