How to run:
/etc/hosts
127.0.0.1 acme.wtf 127.0.0.1 lego.wtf 127.0.0.1 acme.lego.wtf 127.0.0.1 légô.wtf 127.0.0.1 xn--lg-bja9b.wtf
go get -u github.com/letsencrypt/pebble/...
make e2e