enable local observability testing

[colesnodgrass]

This is a task that was identified in the 10/13 retro:

I ended up spending wasting a lot of time trying to reproduce and determine why the metric-reporter Micronaut rewrite caused the metrics to break.

There is a single dev environment where metrics work and currently no local way to determine if changes to our observability/APM code are working as expected. Deploying to the dev environment takes a long time, and it is possible that someone else already is using that dev environment. There needs to be a quicker, local way to verify observability/APM changes. Currently code can compile and tests can pass and our metrics could be completely broken.