Add script `platform_tests/cli/test_show_platform.py` into T0 PR checker.

[yutongzhang-microsoft]

Description of PR

In PR #13220, we add a batch of control plane test scripts into onboarding T0 PR checker, but some of them failed. In this PR, we fix the failed test script platform_tests/cli/test_show_platform.py and let it run successfully in T0 PR checker.

Summary: Fixes # (issue)

Type of change

• [ ] Bug fix
• [ ] Testbed and Framework(new/improvement)
• [ ] Test case(new/improvement)

Back port request

• [ ] 202012
• [ ] 202205
• [ ] 202305
• [ ] 202311
• [ ] 202405

Approach

What is the motivation for this PR?

In PR #13220, we add a batch of control plane test scripts into onboarding T0 PR checker, but some of them failed. In this PR, we fix the failed test script platform_tests/cli/test_show_platform.py and let it run successfully in T0 PR checker.

How did you do it?

How did you verify/test it?

Any platform specific information?

Supported testbed topology if it's a new test case?

Documentation

[wsycqyz]

Have triggered to rerun the failed jobs.