Add support for SSL authentication
See https://github.com/CiscoCloud/microservices-infrastructure/blob/master/security-setup
https://github.com/CiscoCloud/microservices-infrastructure/blob/master/docs/security/security.rst
See also https://issues.apache.org/jira/browse/MESOS-910
it is probably worth waiting on mesos 0.23.0 for this based on the above issue
https://github.com/CiscoCloud/microservices-infrastructure/pull/195/files
i think we should wait for this to manage ssl certs https://github.com/hashicorp/terraform/pull/2778, as it will also bring support for letsencypt down the track