Testing Environment Cross-Testing

[lautarodragan]

The Testing Environment needs to have two completely isolated Po.et Nodes, each with its own IPFS, MongoDB and RabbitMQ.

We need an smoke test that sends an alert to Slack whenever a Work that has been timestamped by Node1 over an hour ago still hasn't been picked up by Node2.

[warrenv]

This feels like it should be a smoke test versus an integration test.

[lautarodragan]

Updated description @warrenv