Fix letsencrypt.tests.client_test.
Fix letsencrypt.tests.client_test.

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