DAOS-11381 control: Optimize Prometheus metrics exporter

[mjmac]

The older implementation used regexps for picking out labels, but this was highly inefficient with large numbers of pools.

Also fixes a couple of bugs in the prometheus naming scheme:

• Network provider name should be a label value, not part of the metric name
• NVMe device address should be a label value, not part of the metric name

Features: telemetry Required-githooks: true

Signed-off-by: Michael MacDonald [email protected]

[github-actions[bot]]

Bug-tracker data: Ticket title is 'Prometheus telemetry exporter is slow' Status is 'In Review' https://daosio.atlassian.net/browse/DAOS-11381