Description
Implement the new stats endpoint,
GET /_prometheusMetricsHigh - for all "high cardinality" metrics. Returns all "per-collection", "per-scope", "per-index" metrics.
Doc- https://docs.google.com/document/d/13zqnp9TZU8QAGba3C1NOAMHgUm0VMgmYRLDZltdj340/edit#