Sort keys when listing

[dominicbarnes]

Currently, the sort order for listing keys appears random (though it's probably the order that AWS lists things). In any case, I think sorting by name is the most sensible thing, especially since you can't pipe that command through sort atm. I could also see viability for sorting by mtime, though I honestly prefer the former.

[stale]

This issue has been automatically marked stale because it has not had any activity in the last 60 days. If no further activity occurs within 7 days, it will be closed. Closed does not mean "never", just that it has no momentum to get accomplished any time soon.
See CONTRIBUTING.md for more info.

[stale]

Closing due to staleness. Closed does not mean "never", just that it has no momentum to get accomplished any time soon.
See CONTRIBUTING.md for more info.

[mckern]

Closing; export and env list keys alphabetically for now, and we may revisit this in the future.