[stress] Make it simple to correlate trace/metrics/events output with chaos-mesh events

It'd be useful to be able to see the chaos-mesh events (when it activated, how long) so we can see which activity in our events, metrics and traces (logs) correspond to that event. This helps with diagnostics in addition to knowing that the policy is running and working properly.

Some small details to keep in mind:
- Policies can target multiple namespaces so you'd want to make sure you're directly correlating network loss (for example) with the right pod
- This could just be a report but it'd be good to think about how to structure this query as a sample so people can extend it as they troubleshoot.