implement polldelay in client
implement polldelay in client

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