Introduce --ask-become-pass or -K to support password-required sudo on remote hosts, just like Ansible.
It will also fall back to this prompt if a password is required but the arg wasn't passed in.
With thanks to slhck from HN for the initial patch, advice and feedback.
* Add remote mode for harvesting a remote machine via a local workstation (no need to install enroll remotely)
Optionally use `--no-sudo` if you don't want the remote user to have passwordless sudo when conducting the
harvest, albeit you'll end up with less useful data (same as if running `enroll harvest` on a machine without
sudo)
* Add `--dangerous` flag to capture even sensitive data (use at your own risk!)
* Do a better job at capturing other config files in `/etc/<package>/` even if that package doesn't normally
ship or manage those files.
