docs(grafana_datasource): add influxdb flux example

[nutgood]

SUMMARY

I've added an example to grafana_datasource to add the flux version of influxdb programatically. It's very hard to find documentation online, especially for people new to ansible (and grafana).

ISSUE TYPE

• Docs Pull Request

COMPONENT NAME

grafana_datasource

[codecov[bot]]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Project coverage is 71.18%. Comparing base (a3056e9) to head (bc0c6be).

Additional details and impacted files

@@           Coverage Diff           @@
##             main     #353   +/-   ##
=======================================
  Coverage   71.18%   71.18%           
=======================================
  Files          18       18           
  Lines        1898     1898           
  Branches      332      332           
=======================================
  Hits         1351     1351           
  Misses        402      402           
  Partials      145      145           

Flag	Coverage Δ
integration	70.04% <ø> (ø)
sanity	23.22% <ø> (ø)
units	65.18% <ø> (ø)

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[nutgood]

Done @Nemental :)