ci: Temporary disable KServe Python tests that may fail

[kthui]

What does the PR do?

Disable all tests on test_kserve.py that may fail. This change is temporary to reduce false failure on the CI and it will be properly fixed with DLIS-7735.

Checklist

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Commit Type:

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• build
• ci
• docs
• feat
• fix
• perf
• refactor
• revert
• style
• test

Related PRs:

triton-inference-server/core#426

Where should the reviewer start?

N/A

Test plan:

N/A

• CI Pipeline ID: See the related core PR for pipeline ID.

Caveats:

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Background

gRPC library does not play well when it is forked, which will happen when a Python model is loaded, so disabling all tests that involve starting the server to prevent loading a Python model after the gRPC library is imported.

Related Issues: (use one of the action keywords Closes / Fixes / Resolves / Relates to)

N/A