Added tests for new UA method
Added tests for new UA method

bsmr-misc-forks/letsencrypt,jsha/letsencrypt,bsmr-misc-forks/letsencrypt,stweil/letsencrypt,letsencrypt/letsencrypt,lmcro/letsencrypt,letsencrypt/letsencrypt,jtl999/certbot,stweil/letsencrypt,jtl999/certbot,lmcro/letsencrypt,jsha/letsencrypt