[Bugfix][Failing Test] Fix test_vllm_port.py

[rabi]

The urllib.parse.urlparse() function itself does not raise an exception during the parsing of a URL. However, certain attributes of the returned ParseResult object (e.g., .port) may raise a ValueError when accessed if they contain invalid values.

Issue introduced in #18209

FIX: #18617

[github-actions]

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[mergify]

This pull request has merge conflicts that must be resolved before it can be
merged. Please rebase the PR, @rabi.

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[rabi]

@DarkLight1337 Hey! can this be merged to fix the test or you're still looking for some specific input from others?

[DarkLight1337]

cc @russellb

[DarkLight1337]

Well the tests pass so let's just merge this