Missing configuration documentation

[veger]

When configuring mesos and friends to use HTTPS, mesos-dns stopped working. Logs showed that HTTP was used to get states.json, due to the configuration change HTTPS is needed now.

Luckily I saw this in the release notes:

Add HTTPS Client support to Mesos-DNS (for state.json)

But I could not find any information on how to use it. After inspecting the commits and source source code I found that I should/could use mesoshttpson: true.

This configuration option (and probably more recent features like using certificates, authentication, etc.) is not documented here or anywhere on the Internet for that matter.