(knowlege) Prometheus DS and Expression queries

[peekjef72]

Describe the bug
A clear and concise description of what the bug is.
With Expression, queries can be used only to compute expression;
In that cas, query may be "hidden", but required.
So for grafana-snapshot by example, need to transmit "hide" param from query to datasource.

To Reproduce
Steps to reproduce the behavior:
see grafana-snapshot-tool Issue 5

Expected behavior
A clear and concise description of what you expected to happen.
that que query_factory add hide param in query:

{
	"0": {
		"adhocFilters": [],
		"datasource": {
			"type": "prometheus",
			"uid": "beb2k426wosu8b"
		},
		"datasourceId": 1,
		"disableTextWrap": false,
		"editorMode": "code",
		"expr": "sum(rate(node_cpu_seconds_total[$__rate_interval]))",
		"fullMetaSearch": false,
		"hide": true,
		"includeNullMetadata": false,
		"instant": false,
		"interval": "60s",
		"intervalMs": 15000,
		"legendFormat": "__auto",
		"maxDataPoints": 916,
		"range": true,
		"refId": "first",
		"useBackend": false
	}
}

Versions

• Grafana: [ 11]
• grafana-client: [current ]

Additional context
will be used in conjoinction with new release of grafana-snapshot

[amotl]

We just released version 4.2.3 including your fix. Thank you very much.

• add hide param for prometheus query (needed by __expr__ query to the datasource) #206