SSH Key management

[tonilaukka]

When you're using multiple SSH Keys it would be nice if you could define the key in group_vars/all. It defaults to ~/.ssh/id_rsa.pub wich I don't have at all and that ends up in an error the first time you run vagrant up. I'm not familiar with ansible, so it took me a while to find out where to set it (roles/capistrano-setup/defaults/main.yml -> deploy_keys), so I could fix the error.

[austinpray]

If we want to be super cool it could automatically grab public keys based on github usernames as an additional configuration option.

https://github.com/austinpray.keys

I have set up servers to use curl to grab my github public keys before, it's pretty simple to do with ansible as well.

[swalkinshaw]

GitHub keys is a great idea.

Ideally adding ssh keys would be a more general thing and taken out of the capistrano role. I'd like to be able to say: add these keys for these users.

[swalkinshaw]

GitHub SSH keys were added in #95.