Set disableMetricLookup when provisioning data source

Grafana Configuration
1

When provisioning a Prometheus data source, like in this example from the official docs, I would like to disable metrics lookup, but there is no documentation about how to provide that setting in the payload.

2
3

This should be documented here, but is not.

The option is a boolean called disableMetricsLookup, and it should go inside the jsonData:

{
  "jsonData": {
    "disableMetricsLookup": true,
    ...
  },
  ...
}
4

So spent a minute and create merge request for improvement of the doc.