See https://github.com/coreos/fedora-coreos-config/commit/83f1bab491147e89314cef430161cad31880ec24
However, for most people this won't really help anything today
because it won't take effect for users created in Anaconda, as
there libuser takes the defaults from the Anaconda environment.
But, this helps any subsequent users, and moves us in the right
direction.
See https://github.com/coreos/fedora-coreos-config/commit/83f1bab491147e89314cef430161cad31880ec24
However, for most people this won't really help anything today
because it won't take effect for users created in Anaconda, as
there libuser takes the defaults from the Anaconda environment.
But, this helps any subsequent users, and moves us in the right
direction.