travis-ci: install extras[testing]
travis-ci: install extras[testing]

riseofthetigers/letsencrypt,tdfischer/lets-encrypt-preview,letsencrypt/letsencrypt,jtl999/certbot,kevinlondon/letsencrypt,piru/letsencrypt,lmcro/letsencrypt,xgin/letsencrypt,stewnorriss/letsencrypt,beermix/letsencrypt,dietsche/letsencrypt,lbeltrame/letsencrypt,fmarier/letsencrypt,wteiken/letsencrypt,armersong/letsencrypt,stweil/letsencrypt,jtl999/certbot,kevinlondon/letsencrypt,wteiken/letsencrypt,stewnorriss/letsencrypt,fmarier/letsencrypt,brentdax/letsencrypt,sjerdo/letsencrypt,jsha/letsencrypt,diracdeltas/lets-encrypt-preview,xgin/letsencrypt,rutsky/letsencrypt,digideskio/lets-encrypt-preview,bsmr-misc-forks/letsencrypt,Jonadabe/letsencrypt,skynet/letsencrypt,luorenjin/letsencrypt,VladimirTyrin/letsencrypt,bsmr-misc-forks/letsencrypt,jmhodges/letsencrypt,hsduk/lets-encrypt-preview,Bachmann1234/letsencrypt,PeterMosmans/letsencrypt,jsha/letsencrypt,ghyde/letsencrypt,g1franc/lets-encrypt-preview,ahojjati/letsencrypt,sapics/letsencrypt,dietsche/letsencrypt,martindale/letsencrypt,PeterMosmans/letsencrypt,Jadaw1n/letsencrypt,goofwear/letsencrypt,Hasimir/letsencrypt,rugk/letsencrypt,stweil/letsencrypt,ruo91/letsencrypt,digideskio/lets-encrypt-preview,BKreisel/letsencrypt,kuba/letsencrypt,ahojjati/letsencrypt,brentdax/letsencrypt,BillKeenan/lets-encrypt-preview,mrb/letsencrypt,rugk/letsencrypt,beermix/letsencrypt,modulexcite/letsencrypt,thanatos/lets-encrypt-preview,jmaurice/letsencrypt,twstrike/le_for_patching,rlustin/letsencrypt,solidgoldbomb/letsencrypt,lbeltrame/letsencrypt,riseofthetigers/letsencrypt,mrb/letsencrypt,TheBoegl/letsencrypt,Bachmann1234/letsencrypt,solidgoldbomb/letsencrypt,goofwear/letsencrypt,DavidGarciaCat/letsencrypt,Hasimir/letsencrypt,mitnk/letsencrypt,hlieberman/letsencrypt,letsencrypt/letsencrypt,skynet/letsencrypt,jmhodges/letsencrypt,VladimirTyrin/letsencrypt,jmaurice/letsencrypt,Jonadabe/letsencrypt,tdfischer/lets-encrypt-preview,vcavallo/letsencrypt,sjerdo/letsencrypt,lmcro/letsencrypt,martindale/letsencrypt,bestwpw/letsencrypt,sapics/letsencrypt,ruo91/letsencrypt,DavidGarciaCat/letsencrypt,thanatos/lets-encrypt-preview,tyagi-prashant/letsencrypt,BillKeenan/lets-encrypt-preview,armersong/letsencrypt,deserted/letsencrypt,twstrike/le_for_patching,BKreisel/letsencrypt,bestwpw/letsencrypt,TheBoegl/letsencrypt,hsduk/lets-encrypt-preview,tyagi-prashant/letsencrypt,rutsky/letsencrypt,modulexcite/letsencrypt,deserted/letsencrypt,mitnk/letsencrypt,hlieberman/letsencrypt,kuba/letsencrypt,luorenjin/letsencrypt,Sveder/letsencrypt,ghyde/letsencrypt,vcavallo/letsencrypt,piru/letsencrypt,Jadaw1n/letsencrypt,Sveder/letsencrypt,g1franc/lets-encrypt-preview,rlustin/letsencrypt,diracdeltas/lets-encrypt-preview