There is this:
http://www.jsmackin.co.uk/suitecrm/suitecrm-command-line-install/
We have a silent upgrader as a Robo command on our develop branch:
https://github.com/salesagility/SuiteCRM/tree/develop/lib/Robo/Plugin/Commands
If you feel up to adding a new Robo command for the install, I am sure other devs would like to help you with that. Keep us updated here: https://gitter.im/suitecrm/Lobby