[analyse] Feature Request: Support for additional panels that use metrics

[eamonryan]

There are many panel types that analyse does not currently support

Here are the results I got from a decently busy environment:

$ less metrics-in-grafana.json  | grep "unsupported" | sort --unique
        "unsupported panel type: \"agenty-flowcharting-panel\""
        "unsupported panel type: \"agenty-flowcharting-panel\"",
        "unsupported panel type: \"alertGroups\"",
        "unsupported panel type: \"alertlist\""
        "unsupported panel type: \"alertlist\"",
        "unsupported panel type: \"barchart\""
        "unsupported panel type: \"barchart\"",
        "unsupported panel type: \"btplc-trend-box-panel\"",
        "unsupported panel type: \"canvas\"",
        "unsupported panel type: \"dashlist\""
        "unsupported panel type: \"dashlist\"",
        "unsupported panel type: \"flant-statusmap-panel\""
        "unsupported panel type: \"gauge\""
        "unsupported panel type: \"gauge\"",
        "unsupported panel type: \"geomap\""
        "unsupported panel type: \"geomap\"",
        "unsupported panel type: \"gettingstarted\"",
        "unsupported panel type: \"grafana-piechart-panel\""
        "unsupported panel type: \"grafana-piechart-panel\"",
        "unsupported panel type: \"grafana-polystat-panel\""
        "unsupported panel type: \"grafana-polystat-panel\"",
        "unsupported panel type: \"grafana-worldmap-panel\""
        "unsupported panel type: \"grafana-worldmap-panel\"",
        "unsupported panel type: \"histogram\"",
        "unsupported panel type: \"homelinks\""
        "unsupported panel type: \"logs\""
        "unsupported panel type: \"logs\"",
        "unsupported panel type: \"marcusolsson-treemap-panel\"",
        "unsupported panel type: \"natel-discrete-panel\""
        "unsupported panel type: \"natel-discrete-panel\"",
        "unsupported panel type: \"news\""
        "unsupported panel type: \"news\"",
        "unsupported panel type: \"nodeGraph\"",
        "unsupported panel type: \"piechart\""
        "unsupported panel type: \"piechart\"",
        "unsupported panel type: \"pluginlist\"",
        "unsupported panel type: \"row\""
        "unsupported panel type: \"row\"",
        "unsupported panel type: \"ryantxu-ajax-panel\"",
        "unsupported panel type: \"state-timeline\"",
        "unsupported panel type: \"status-history\"",
        "unsupported panel type: \"table-old\""
        "unsupported panel type: \"table-old\"",
        "unsupported panel type: \"text\""
        "unsupported panel type: \"text\"",
        "unsupported panel type: \"text2\"",
        "unsupported panel type: \"timeseries\""
        "unsupported panel type: \"welcome\"",
        "unsupported panel type: \"xychart\"",

Some of these make sense e.g. logs, alertlist, text, and so on.

However a number of these are typically created using metrics queries such as:

timeseries - The new "Graph" panel, very common
grafana-piechart-panel - If this is the "new" piechart panel, it may be the old one
grafana-polystat-panel - Maybe a bit nonstandard but still in use
piechart - This one is probably the new one
barchart
histogram
etc.

It would be good to evaluate and add support for all common metrics type panels.

cc @hjet