Auto Cluster - expose real-time data between agents

[daveharris1]

Having discussed this with Anton, it would be beneficial to add the ability in the NBomber SDK to allow real-time data to be passed between agent when a distributed Auto Cluster NBomber run.

For example, Agent 1 has a "starting" state. Agent B needs to be aware of this state before it can get into a "starting" state. This would then be the same for Agents 3,4,5......n.