[WIP] Switches to using python-experimental generator for client generation

[spacether]

What type of PR is this?

What this PR does / why we need it:

This PR switches to using python-experimental generator and openapi-generator v6.1.0 Please do not review this PR into I move it out of WIP/Draft State This PR updates the python client from the python generator to the python-experimental generator which has:

• type hints everywhere
• more robust composition(oneOf/anyOf/allOf/not) support
• payload someProp case used rather than python some_prop used to ensure compliance when imposing json schema keywords like properties/additionalProperties/composition. This allows a payload to contain the separate keys someProp and some_prop
• supports newer openapi features like handling of multiple request body content types and response body content types

I am seeking feedback from your project on how you feel about using the code generated from the python-experimental generator.

Which issue(s) this PR fixes:

Fixes #

• https://github.com/kubernetes-client/python/issues/1846
• https://github.com/kubernetes-client/python/issues/1421
• https://github.com/kubernetes-client/python/issues/1032

Special notes for your reviewer:

I am seeking feedback from your project on how you feel about using the code generated from the python-experimental generator.

Does this PR introduce a user-facing change?

This will require changes to how users integrate with the client.
A migration guide is included which shows what needs to be updated here
https://github.com/spacether/kube_python/tree/feat_switches_to_python_exp_client/kubernetes#migration-from-other-generators-like-python-and-python-legacy
Min allowed python version is 3.9
- Reviewer note: if you need a lower version I think that I could switch down to the 3.8 feature set because I need typing.overload and TypedDict

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

@spacether: Adding the "do-not-merge/release-note-label-needed" label because no release-note block was detected, please follow our release note process to remove it.

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• :white_check_mark: login: spacether / name: Justin Black (de09cfa02bb53ec96590af268fe4459a925ca33a, 975f7286715fe6319e628c588a8a016b2046c328)

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[yliaog]

i think we should not be using the experimental generator. please file a PR to use the official generator release.

[spacether]

@yliaog I just updated this PR to use the official 6.2.0 python generator

[spacether]

@yliaog can you or others review this PR? Do I need to do anything else?

[yliaog]

could you please squash the commits? I'll take a look afterwards. Thanks.

[spacether]

@yliaog just squashed them into one commit now

[yliaog]

https://github.com/spacether/kube_python/tree/feat_switches_to_python_exp_client/kubernetes#migration-from-other-generators-like-python-and-python-legacy

so this PR introduces breaking change? for breaking change, we need to solicit community feedback.

also it's better to split the PR into at least two commits, one commit for generated files, the other commit is for the manual edited files.

[spacether]

https://github.com/spacether/kube_python/tree/feat_switches_to_python_exp_client/kubernetes#migration-from-other-generators-like-python-and-python-legacy

so this PR introduces breaking change? for breaking change, we need to solicit community feedback.

also it's better to split the PR into at least two commits, one commit for generated files, the other commit is for the manual edited files.

Yes the updated client has breaking changes versus the old ones. I have not manually edited files. Which files need to be manually edited/where in this code base uses the client? How do we solicit community feedback?

[yliaog]

https://github.com/kubernetes-client/gen/tree/master/openapi needs manual update?

please send email to: [email protected]

file an issue similar to: https://github.com/kubernetes-client/python/issues/974

[spacether]

My plan is to wait until 6.2.1 is released to get community feedback

[yliaog]

sounds good. thanks.

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[spacether]

Just posted an email in https://groups.google.com/a/kubernetes.io/g/dev which looks like the newest google group to use

[tomplus]

@spacether Could you update examples/ and e2e tests?