Fix and re-enable any disabled tests

[tegefaulkes]

Specification

There are some disabled tests in the CLI right now. There are two nodes ping tests but here may be others that need to be fixed.

The nodes ping tests were disabled after the fail to ping tests were throwing the wrong error. I think this needed to be fixed in Polykey but check the tests first.

Any other test that is disabled with .skip or testIf(false) need to be checked and re-enabled if needed.

Additional context

• Related 6th Testnet Deployment Polykey#551
• Related 6th Testnet Deployment Polykey#551 (comment)

Tasks

• 1. Fix and re-enable the nodes ping tests.
• 1. Find, fix and re-enable any other tests that are disabled.

[tegefaulkes]

As it stands, the following tests are disabled

1. tests/nodes/ping.test.ts - 2 tests
2. tests/agent/start.test.ts - 1 test
3. tests/integration/testnet/testnetConnection.test.ts - 2 tests
4. tests/nat/DMZ.test.ts
5. tests/nat/endpointDependentNat.test.ts
6. tests/nat/endpointIndependentNat.test.ts

[tegefaulkes]

I've made a start on this, but some of the tests require a fix to MatrixAI/js-rpc. I'll make a new issue there for tracking the problem.

[CMCDragonkai]

NAT related tests are hard to replicate and hard to maintain.

Consider we love NAT tests to the simulation infrastructure using Pulumi @amydevs.

Export the code and keep it in Polykey-Simulation on gitlab.