Test an app with simulated network instability

[aguibert]

User story:

As a user of this test framework, I want to test an app that simulates network instability.

Additional detail:

Applications should be resilient to failures in infrastructure such as excessive latency or cut connections. MicroProfile Fault Tolerance was created for this reason, but it can be difficult to test in an automated fashion. Use the toxiproxy module to simulate network instability with applications and ensure they recover properly.