[GCU] [MA] Adding support in existing tests - PFCWD

[okaravasi]

Description of PR

This PR adds the common changes for adding Multi-ASIC support for generic config updater (GCU) in existing suites.
Original ticket that got splitted: #14070
This change has a dependency on common changes added via #15182

Summary:
Fixes # (issue)

Type of change

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

Back port request

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

Approach

What is the motivation for this PR?

To add support for Multi-ASIC testing in existing PFCWD GCU suites.

How did you do it?

How did you verify/test it?

Ran in vs-kvm-t0 testbed. Ran in t2 MA platform.

Any platform specific information?

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

Documentation

[mssonicbld]

The pre-commit check detected issues in the files touched by this pull request.
The pre-commit check is a mandatory check, please fix detected issues.

Detailed pre-commit check results:
trim trailing whitespace.................................................Passed
fix end of files.........................................................Passed
check yaml...........................................(no files to check)Skipped
check for added large files..............................................Passed
check python ast.........................................................Passed
flake8...................................................................Failed
- hook id: flake8
- exit code: 1

tests/generic_config_updater/test_pfcwd_interval.py:107:1: E302 expected 2 blank lines, found 1
tests/generic_config_updater/test_pfcwd_status.py:211:9: E122 continuation line missing indentation or outdented
tests/generic_config_updater/test_pfcwd_status.py:212:9: E131 continuation line unaligned for hanging indent

flake8...............................................(no files to check)Skipped
check conditional mark sort..........................(no files to check)Skipped

To run the pre-commit checks locally, you can follow below steps:

1. Ensure that default python is python3. In sonic-mgmt docker container, default python is python2. You can run
   the check by activating the python3 virtual environment in sonic-mgmt docker container or outside of sonic-mgmt
   docker container.
2. Ensure that the pre-commit package is installed:

sudo pip install pre-commit

3. Go to repository root folder
4. Install the pre-commit hooks:

pre-commit install

5. Use pre-commit to check staged file:

pre-commit

6. Alternatively, you can check committed files using:

pre-commit run --from-ref <commit_id> --to-ref <commit_id>

[okaravasi]

@xincunli-sonic Could you please review?

[xincunli-sonic]

This PR could be dup with #14098, please double check, but you can left non namespace related changes. Thanks!