- Remove `gogo/protobuf` and `golang/protobuf` deps
- Fix mistake in `CONTRIBUTING.md`
- Use Prometheus `MetricType` type over our own copy-paste version
Scraping was enriching the tag set by adding the
prometheus data type in the tag key name, "type."
If a scraped metric already had the tag, "type," then
this would cause errors far away from problem in flux.
Co-authored-by: Kelvin Wang <sherkrainwang@gmail.com>
Dane Strandboge
Daniel Moran
Chris Goller
Kelvin Wang