SFTP Uploader implementation
Paramiko policy to automatically add the hostname, but only after asking.
Provides an interface to upload files through SFTP.
This is a subclass of dput.uploader.AbstractUploader
Thrown in the event of a problem connecting, uploading to or terminating the connection with the remote server. This is a subclass of dput.exceptions.UploadException.
Return whether paramiko satisfies the given a version requirement (req),
Given a profile (conf), return the preferred username to login with. It falls back to getting the logged in user’s name.