Disable client authentication

[mralli-xm]

I am trying to use the image for some kafka tests and I cannot find an option to configure Kafka brokers to accept SSL connections from the clients but not authenticate them. According to the documentation ENABLE_SSL variable will create a truststore and two signed key-certificate pairs, one for the broker, one for your client. It seems that there is no option to enable TLS connection and not require client authentication (ssl.client.auth=none). Is it possible?