Get issuer from Certificate if not provided in config

[drGrove]

If the config does not provide an issuer, the server should be able to grab the issuer from the certificate. This will reduce duplication of configuration in helm and standard configs

[drGrove]

This should really only be in the config if a cert is not provided. It should also be using the common name. Organization Name should also be passed back to the user in the /ca. That way the user doesn't need to actually know the issuer Org Name.