[action] [PR:16535] Fix ASIC check in test_pfcwd_function

[mssonicbld]

Description of PR

Summary:
The issue was introduced by PR #15772
The ASIC check is not working as expected because of the syntax error in the code. It should be in instead of ==

sonic-mgmt/tests/pfcwd/test_pfcwd_function.py

Line 757 in 21dbd80

if dut.facts['asic_type'] == ["mellanox", "cisco-8000"]:

The issue will cause PFCWD function not stable on some platform.

Type of change

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

Back port request

• 202012
• 202205
• 202305
• 202311
• 202405
• 202411

Approach

What is the motivation for this PR?

This PR is to fix a syntax issue in test_pfcwd_function.py.

How did you do it?

Fix the syntax.

How did you verify/test it?

The change is verified on a physical testbed.

collected 1 item 

pfcwd/test_pfcwd_function.py::TestPfcwdFunc::test_pfcwd_actions[bjw2-can-4600c-2] ^H ^HPASSED [100%]

Any platform specific information?

No.

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

Not a new test.

Documentation

[mssonicbld]

/azp run

[mssonicbld]

Original PR: #16535

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