Metrics and reports

[kazimir-malevich]

We need real time metrics on the console and logs that can be parsed to create a beautiful HTML JavaScript report including request and response time distribution, percentiles, number of errors and HTTP successes post run. If we can get real time graphs in the console that would be great and developers would love that.

Clients can use Influx and Grafana or something for real time visualization by piping the logs to the datastore. We document how to do this but it is out of our scope.