Replace TryCP with Nomad for running scenarios

[cdunster]

After the spike #111, the decision was made to replace TryCP with Nomad. This issue is to track the progress of that replacement.

Nomad requires some ports to be open to communicate between the Nomad server and clients, see here.

We need to coordinate with Holo to make sure that the available Holo Ports are configured correctly to be used with Nomad.

AC:

• Add the Nomad package to the NixOS definitions for the Wind Tunnel Holo Ports.
  • This may require deploying a custom agent configuration on the Holo Port clients.
• Package the scenarios as binaries that the Nomad Clients can reach. This might mean saving them as artefacts in a GitHub job and then using the Nomad artifact block to download them as part of a task.
• Create a Nomad task to run the scenarios on the clients running on the Holo Hosts.
• Get telemetry data and upload it to the InfluxDB instance for Wind Tunnel.
• Support running the scenarios locally with Nomad.
• Add documentation on how to run a scenario locally and on the Holo Ports.
• Add the ability to start the conductor from Wind Tunnel (support for Test Holochain startup time scenario #133).

Could be done later if this gets too big:

• Migrate the existing TryCP scenarios to Nomad.
• Remove existing TryCP support.

Out of scope:

• A new approach to packaging the scenarios. Stick with Nix for now.