Add amd dpu specific cpu, memory & ssdhealth parameters for TCs

[anilal-amd]

Description of PR

This PR is to fix sonic-mgmt platform test cases which runs on amd specific dpus with sonic

Summary:
Fixes # (issue)

Listing down the test cases and what changed in each.

1. tests/platform_tests/cli/test_show_platform.py::test_show_platform_ssdhealth

• Add SSD type 'EMMC' to supported list

2. tests/platform_tests/test_cpu_memory_usage.py::test_cpu_memory_usage

• provide the threshold values for cpu and mem usage.

Type of change

• Bug fix
• Testbed and Framework(new/improvement)
• New Test case
  • Skipped for non-supported platforms
• Test case improvement

Back port request

• 202205
• 202305
• 202311
• 202405
• 202411
• 202505

Documentation

Signed-off-by: [email protected]

[linux-foundation-easycla]

The committers listed above are authorized under a signed CLA.

• ✅ login: anilal-amd / name: Anilal Pathiyappara (0000ce1, 64d733f)

[mssonicbld]

/azp run

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[anilal-amd]

Hi
@vvolam, @nissampa
Please review.

[mssonicbld]

/azp run

[azure-pipelines]

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