1) Running multiple tofino-model + Stratum instances

Currently, Stratum connects to the running tofino-model instance via hardcoded (in tofino-model!) ports on localhost.
So, starting multiple Stratum instances, of course, is not possible as they all connect to the same tofino-model.

An explanation and solution brought forward by @bocon13 :

Each tofino-model + stratum pair needs to be started in its own network namespace, because tofino-model and the BF SDE are hardcoded to use localhost to find each other. Should be possible inside a Docker container if both are attached to the same network.

2) Mininet integration

Similar to the bmv2 switch class for Mininet, a tofino-model switch integration in Mininet certainly would be useful.

Also described by @bocon13:

The "mininet" way to do this would be to include the Stratum and tofino-model binaries and start them up in their own Mininet Node... should be a pretty easy class to write (similar to the BMv2 one) except you need to spawn two processes instead of one.

Since the Stratum doc recommends using Docker images, we should go this route?