Add scenario in info dict of every molotov events

[douardda]

When writing a molotov event handler (like in example6.py), it would make life easier to have a reference to the scenario in sending_request or response_received events (as it is done for scenario_xxx events).

[tarekziade]

That would be cool indeed. It requires two things:

• add in LoggedClientSession LoggedClientRequest a scenario property that can be changed
• when the scenario is called, set the property in https://github.com/loads/molotov/blob/master/molotov/worker.py#L172

would you like to takle it ? :)

[douardda]

I'm currently digging it, yes

[tarekziade]

Notice that since we are in async mode, the scenario value should be linked to the request object, not the session, because the session deals with many requests in parallel

[douardda]

I've seen that, and that makes life a bit harder since the request object is instanciated deep inside the ClientSession._request coroutine...