Signed-off-by: kklipsch <kklipsch@example.com>
- Use local registry to avoid conflicts between tests. - Expose https://github.com/prometheus/client_golang/issues/299 by using ConstLabels in a test. - Improve example: Buckets and help string must be consistent, even if the former is not enforced as of now, but see https://github.com/prometheus/client_golang/issues/222
Instrument RoundTripper via middleware