tests fix checkpoint.

Author: alexmv

ci/certbot/test.sh

@@ -36,6 +36,7 @@ if [ "${success}" = "0" ]; then
 fi
 
 ## SMTP also has the same cert
+echo "EHLO localhost" | nc localhost 25
 echo | openssl s_client -showcerts -servername zulip.example.net -connect localhost:25 -starttls smtp \
     | openssl x509 -text -noout \
     | tee cert.pem
@@ -47,6 +48,7 @@ fi
 ## Test renewing -- this should generate and deploy a new certificate
 serial=$(grep "Serial Number:" cert.pem)
 "${docker[@]:?}" exec zulip /usr/bin/certbot renew --force-renew --non-interactive --debug
+"${docker[@]:?}" exec zulip cat /var/log/letsencrypt/letsencrypt.log
 getcert | tee cert.pem
 newserial=$(grep "Serial Number:" cert.pem)
 if [ "${newserial}" = "${serial}" ]; then