Figure out data collection

[ralph-hatoum]

Currently, each node will run a HTTP server. Through Prometheus we can then collect data periodically. However, we can still not get data and build graphs.

We need to grab the data generated in the test from the Prometheus database and package it in the best way possible.
Also we need to be able to very easily add new metrics.
Data collection should be better essentially.
Graph building could also be done automatically.