Cluster overview panels for InfluxDB

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Consider a possibility on how to add cluster overview panels (#19) to InfluxDB dashboard. https://habr.com/ru/company/raiffeisenbank/blog/490764/ may help

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Example of request for pre-Flux InfluxDB:

SELECT count(\"value\") FROM \"example_project_http\" WHERE $timeFilter AND time < now() - 1m GROUP BY time($__interval), \"label_pairs_alias\" fill(null)