[InfluxDB] Support for InfluxDB 2

[tobru]

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InfluxDB version 2 has a slightly different API, mainly:

• Now using API tokens instead of username/password
• Replacing database/retention policy with bucket

This needs a few changes how the HTTP POST looks like, see Write data with the InfluxDB API.

[amotl]

Hi Tobias,

it would be sweet to have an adapter for InfluxDB 2 for mqttwarn. Do you see a chance of contributing it?

influxdb.py has the code for InfluxDB 1. Maybe it will not be too hard to conceive a page of code having corresponding support for InfluxDB 2. I would implement the adapter within a separate file called influxdb2.py.

With kind regards, Andreas.

[tobru]

I cannot promise anything, but I might give it a try some when :+1:

[amotl]

Dear Tobias,

I cannot promise anything, but I might give it a try some when 👍.

I am sure any patch in this regard will be very much appreciated, with ❤️.

With kind regards, Andreas.