maintenance: added types to KubeConfig#loadFromOptions input

[emeraldsanto]

Summary

This PR adds stronger types to the KubeConfig#loadFromOptions method which is currently accepting any, even though all the necessary types are already defined and available to use.

[linux-foundation-easycla]

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• ✅ login: emeraldsanto / name: Yanick Bélanger (8b2b685)

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[brendandburns]

Thanks for the PR, this looks fine but CI/CD is failing b/c of the stricter types.

I think we need to make some fields in the existing types optional (e.g. skipTlsVerify)

[emeraldsanto]

@brendandburns good catch! I've gone ahead with the change and confirmed the tests pass locally. However that type has not been changed in 5 years so I'm worried that marking this field as optional now might be a breaking change?

[brendandburns]

I looked at the code and I think we'll be ok. Most people are probably not including it anyway...

[brendandburns]

/lgtm
/approve

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[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: brendandburns, emeraldsanto

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[brendandburns]

(and fwiw, adding stronger types is probably a breaking change anyway :) )