Make sudo on dev, core{master,slave} use ssh keys for auth

[owendelong]

Found this and thought it would be a better way to handle sudo than handing out the root password:

https://www.vinnie.work/blog/2023-01-28-sudo-with-ssh-keys

[kylerisse]

I don't really want to put my private key on the server, or to maintain a separate one for sudo. Doesn't seem better than NOPASSWD in any way, as called out in the article.