I first used the Nethserver module for creating letsencrypt certificates. However, I wanted a 4096 bit certificate but Nethserver has no option for that in the module. Also other options of certbot aren't available in the Nethserver module (e.g. --redirect etc.).
I understand completely that it would be also crazy to have all options of certbot in the module...
however it would be great if a few more options were available.
For me, installing the certificate via certbot worked great...! So, this is really only a feature request.