Support ssh keys when accessing GitHub via Bamboo

It would be nice if we could use the ssh keys that we created in "Shared credentials" in Bamboo instead of having to supply a GitHub username and password.

It's not safe nor convenient for me to save my GitHub user id and password on Bamboo on-demand. What would be better is if I generated ssh keys and register the public key on GitHub while the public key is stored in in Bamboo on-demand.