Rudder

OK, so that's no so simple because of the fact that we return a "inventory status" to callers and that that status needs signature check, which means that we need to parse both signature file (ok, small) and inventory (not ok). The inventory parsing is need to get:

- nodeId (used to check certificate subject),
- certificate (for public key).

So, we can make all of that MUCH simpler, but it will be an API change:

- rest API only copy inventory / signature file to /var/inventories/received (no special treatment for it),
- same logic for inotify and periodic catch-up,
- only one big queue of the small InventoryFileInfo structure (can likely hold 10 000 elements for the cost of one parsed inventory)
- dequeue does the xml parsing, signature check, etc. (but here, see, returns Unit, nobody knows when it will happen).

For 6.1, we can try to add a buffer on the standard path (ie: not the rest API), and only there.