TODO: update this in light of http://www.planetcassandra.org/blog/post/a-quick-tour-of-internal-authentication-and-authorization-security-in-datastax-enterprise-and-apache-cassandra
TODO: update this in light of http://www.planetcassandra.org/blog/post/a-quick-tour-of-internal-authentication-and-authorization-security-in-datastax-enterprise-and-apache-cassandra