feat: MTLS support for the InfluxDB Python client

[ZPascal]

Closes #508

Proposed Changes

Add MTLS support to the InfluxDB Python client as already discussed inside the following issue.

TODO

• Check the context usage (sync case)
• Add unit tests
• Squash the commits together

Checklist

• CHANGELOG.md updated
• Rebased/mergeable
• A test has been added if appropriate
• pytest tests completes successfully
• Commit messages are conventional
• Sign CLA (if not already signed)

[ZPascal]

Hi @bednar, should I also prepare an integration test scenario, or is it for these optional parameters not necessary?

[ZPascal]

Hi Jakob @bednar, could you please approve the missing workflows and review the change. Thanks

[bednar]

Thanks for your PR 👍
There are a few requirements that must be be satisfy before we accept the PR:

[codecov-commenter]

Codecov Report

Base: 90.11% // Head: 90.14% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (d011df7) compared to base (50f021e).
Patch coverage: 85.18% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master     #509      +/-   ##
==========================================
+ Coverage   90.11%   90.14%   +0.02%     
==========================================
  Files          39       39              
  Lines        3380     3400      +20     
==========================================
+ Hits         3046     3065      +19     
- Misses        334      335       +1     

Impacted Files	Coverage Δ
influxdb_client/_sync/rest.py	86.99% <ø> (ø)
influxdb_client/client/influxdb_client.py	98.73% <ø> (ø)
influxdb_client/client/influxdb_client_async.py	87.93% <ø> (ø)
influxdb_client/_async/rest.py	77.77% <50.00%> (-0.45%)	⬇️
influxdb_client/client/_base.py	97.47% <100.00%> (+0.11%)	⬆️
influxdb_client/configuration.py	87.91% <100.00%> (+0.27%)	⬆️

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[bednar]

Thanks again for your PR 👍 There are a few requirements that must be be satisfy before we accept the PR:

1. Rebase your sources with master branch
2. Add new client's options (:key str cert_file, ...) to the from_config_file and from_env_properties functions. For more info see: feat: allow to use client's optional configs for initialization from file or environment properties #510

and also:

[ZPascal]

Hi @bednar, I'll adapt the PR. I'm also thinking about the possibility to add all SSL-related optional parameters like verify_ssl or ssl_ca_cert to the docstring documentation of the from_env_properties and from_config_file function. What do think about the documentation feature?

[bednar]

I'll adapt the PR. I'm also thinking about the possibility to add all SSL-related optional parameters like verify_ssl or ssl_ca_cert to the docstring documentation of the from_env_properties and from_config_file function. What do think about the documentation feature?

Yes, it will be useful. We already improve this docs in #510, please rebase your source to check an actual version of the client.

[ZPascal]

Yes, it will be useful. We already improve this docs in #510, please rebase your source to check an actual version of the client.

I've handled it.

[bednar]

We are almost ready to merge this PR, but there are a few requirements that must be be satisfy before we accept the PR:

[bednar]

LGTM 🚀