Fix a test to new OpenAPI client configuration

[palnabarun]

Ref: OpenAPITools/openapi-generator#4988

Ref: kubernetes-client/python#1188

[k8s-ci-robot]

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[palnabarun]

/assign @roycaihw @yliaog

[palnabarun]

@roycaihw -- I didn't see that you fixed the same with #202 😅

Closing this in favor of #202

/close

[k8s-ci-robot]

@palnabarun: Closed this PR.

In response to this:

@roycaihw -- I didn't see that you fixed the same with #202 😅

Closing this in favor of #202

/close

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