Add a /metrics endpoint on the admin pod
It will be useful:
1. to separate admin queries from the normal requests
2. to do only one request to the database (to get the cache and queue stats), since there is only 1 admin pod, against one request per pod on the `api` container

(maybe it would be a "datasets-server-prometheus-exporter")
Add a /metrics endpoint on the admin pod: It will be useful:
1. to separate admin queries from the normal requests
2. to do only one request to the database (to get the cache and queue stats), since there is only 1 admin pod, against one request per pod on the `api` container

(maybe it would be a "datasets-server-prometheus-exporter")