Non-deterministic failure of unit tests for virtual ports

[mathisrichter]

Objective of issue: Some of the unit tests in lava/tests/lava/magma/core/process/ports/test_virtual_ports_in_process.py fail non-deterministically. Different tests are affected, possibly those that test writing from a RefPort to a VarPort.

Lava version:

• [ ] 0.5.0 (feature release)
• [ ] 0.4.1 (bug fixes)
• [x] 0.4.0 (current version)
• [ ] 0.3.0
• [ ] 0.1.2

I'm submitting a ...

• [ ] bug report
• [ ] feature request
• [ ] documentation request

Current behavior:

Expected behavior:

Steps to reproduce:

• Can sometimes be reproduced by running all the ports tests multiple times on NCL servers.

Related code:

insert short code snippets here

Other information:

insert the output from lava debug here