Some events are not properly defined.

[pjcalvo]

Some events that we currently handle are not properly defined an thus we should fix them to make sure the code is clean:

For example:

 def test_stop(self, user_count=None, environment: Environment =None) -> None:
        self.__register_event(self.node_id, 0, 'test_stopped')

If we look at the code from locust this event does not trigger neither user_count nor environment, so there params are basically useless:

test_stop: EventHook
"""
Fired on each node when a load test is stopped.
"""

Please only look at those that we currently support. To add new events it is better to separate into new issues.