And if you don’t want to upgrade to FOG trunk you can find hundreds and thousands of articles on how to generate self signed certificates. Try searching the web. The first few that come up:
https://www.linux.com/learn/tutorials/392099-creating-self-signed-ssl-certificates-for-apache-on-linux
http://www.akadia.com/services/ssh_test_certificate.html
https://devcenter.heroku.com/articles/ssl-certificate-self
Or use tools like TinyCA if you prefer GUI programs.