Graphite scaler docs

[bpinske]

Provide a description of what has been changed

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Fixes #1628

[zroubalik]

Could you please update the file, so for example the Parameter list items description is more verbose.

Add more details to the metricName (as it is done for other scalers). More examples for queryTime would be great and does the value needs to be negative?

[zroubalik]

And I don't see a section on auth

[bpinske]

I don't see a section on auth
Could you please update the file, so for example the Parameter list items description is more verbose.

Add more details to the metricName (as it is done for other scalers). More examples for queryTime would be great and does the value needs to be negative?

All comments addressed. Verbosity is comparable to the Prometheus scaler.

Yes, the value does need to be a negative relative lookback time to be useful.
https://graphite-api.readthedocs.io/en/latest/api.html#from-until