The current way we handle network file transfers is rather messy. There are multiple scripts that independently wrap `curl` and `ssh` for file transfers:
1. ~~`vyatta-remote-copy.pl` (used exclusively for tech support file uploads).~~
2. `vyatta-image-tools.pl` contains its own ad hoc routines for `curl` //and// `rsync` for some strange reason even though `vyatta-remote-copy.pl` is available.
3. ~~Erstwhile `remote.py` (used for config management).~~
4. `vyatta-save-config.pl` (also used for config management).
5. `vyatta-load-user-key.pl` for `loadkey`.
All of them spend a lot of effort figuring out the given protocol and fiddling with host keys.
The solution is writing a single all-Python script as the one-stop solution for all remote transfers in the codebase. Python standard library comes with `ftplib`, which is an adequate FTP client for our needs, although there is nothing for SSH. Paramiko is a well-known, reliable SSH library for Python, suited exactly for this purpose. It would save us from relying on `curl` and herding host keys.