B-48287 Initial structure pattern in place
B-48287 Added metrics recording
B-48287 Default useMetrics to false
B-48287 Updated unit tests
Merge commit '1127cd55891ea23ae79a24a0b25a6099f956407b' into uri-normalization-metrics
This gives use runtime configs and dynamic ports.
Added configs and code for single-instance case.
Added code and configs for the multiple-instance case.
Merge pull request #636 from izrik/uri-normalization-metrics

 B-48287 Instrument Filter: URI Normalization