Use su if sudo is not available, this fixes #1148
Use su if sudo is not available, this fixes #1148

wteiken/letsencrypt,bsmr-misc-forks/letsencrypt,piru/letsencrypt,lmcro/letsencrypt,TheBoegl/letsencrypt,dietsche/letsencrypt,lbeltrame/letsencrypt,brentdax/letsencrypt,thanatos/lets-encrypt-preview,goofwear/letsencrypt,kuba/letsencrypt,VladimirTyrin/letsencrypt,stweil/letsencrypt,thanatos/lets-encrypt-preview,letsencrypt/letsencrypt,Sveder/letsencrypt,martindale/letsencrypt,bsmr-misc-forks/letsencrypt,jsha/letsencrypt,jtl999/certbot,twstrike/le_for_patching,DavidGarciaCat/letsencrypt,sjerdo/letsencrypt,mrb/letsencrypt,piru/letsencrypt,mitnk/letsencrypt,twstrike/le_for_patching,mitnk/letsencrypt,xgin/letsencrypt,letsencrypt/letsencrypt,VladimirTyrin/letsencrypt,dietsche/letsencrypt,martindale/letsencrypt,sjerdo/letsencrypt,DavidGarciaCat/letsencrypt,lmcro/letsencrypt,lbeltrame/letsencrypt,mrb/letsencrypt,xgin/letsencrypt,goofwear/letsencrypt,jtl999/certbot,kuba/letsencrypt,stweil/letsencrypt,TheBoegl/letsencrypt,jsha/letsencrypt,Sveder/letsencrypt,brentdax/letsencrypt,wteiken/letsencrypt