Generate CSR for an other certificate provider

openssl has gotten stricter about the inputs it accepts. The -subj option at

probably needs to be revised to be "/C=%s/CN=%s" instead of "/C=%s/ST=/L=/O=/CN=%s". If someone could submit this change in a pull request that’d be appreciated, including an entry in the CHANGELOG and a reference to the commit below.

We hit a related issue here: