Check the config to see if SSL configuration options have been passed
        and replace none, option, and required with the correct values in
        the certreqs attribute if it is specified.

        :rtype: dict

def ssl_options(self):
        """Check the config to see if SSL configuration options have been passed
        and replace none, option, and required with the correct values in
        the certreqs attribute if it is specified.

        :rtype: dict

        """
        opts = self.namespace.server.get(config.SSL_OPTIONS) or dict()
        if config.CERT_REQS in opts:
            opts[config.CERT_REQS] = \
                self.CERT_REQUIREMENTS[opts[config.CERT_REQS]]
        return opts or None