Update for Influx v2

[DragonQ]

This commit adds support for InfluxDB v2 and Flux queries. InfluxDB v1 with InfluxQL queries should still work, although I haven't tested this.

InfluxDB v2 is the default option in the example settings ini file because the included docker-compose example uses that version.

[antwilliams]

@DragonQ - thanks for doing this, one comment is that you missed adding influxdb-client to the requirements.txt file and it is needed for v2 connectivity.

I think it would also be good if you added the org= field in the example-octograph.ini field.

I don't know if this is likely to be merged in any time soon but I am using your branch directly at the moment along with the flux based dashboard.

[DragonQ]

@DragonQ - thanks for doing this, one comment is that you missed adding influxdb-client to the requirements.txt file and it is needed for v2 connectivity.

I think it would also be good if you added the org= field in the example-octograph.ini field.

Done, thanks for the feedback. I have another branch that adds the "tracker" tariff to the mix but it's based off this branch and I haven't tested it off master.