Comment 9 for bug 2024385

Here is our code submission with the new agent-based design:

https://review.opendev.org/c/openstack/networking-generic-switch/+/897047

This is joint work from me and Matthieu Imbert.

It took us longer than expected to figure out how to redesign unit tests without losing too much coverage.

We plan to submit a second batch of changes with the performance improvements presented in the design (batching and parallelization).