Add more events to Prometheus to ensure visibility #76
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The gRPC RED metrics integration test runs last and I suspect it has something to do with it being flaky. Especially, since we added all the batching I suspect the events don't make it on time for us to pick them up. To confirm this hypothesis, I'm modifying the test to save a lot more events to force push of the metrics.
Closes #65
If after this change we still see the same issue, we need to pursue another avenue of investigation.