`comps-sync.py` now has support for explicitly syncing *from* the
workstation comps. In order to do this sanely though, we need a
"blacklist" of things we don't want to sync.
There are a few issues here:
- desktop applications
- dubious CLI apps
- dnf
- dubious misc things: e.g. `tcp_wrappers`, `crontabs`
- arch-specific bits (not handled right now)
Colin Walters