SDN Test framework for SONiC

[vamsipunati]

Description of PR

Created subdirectory sdn_tests. Added a readme and topology document to cover Ondatra test framework to test SONiC images. We will add tests in subsequent commits.

Summary:
Fixes # (issue)

Type of change

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

Back port request

• 201911
• 202012
• 202205
• 202305
• 202311

Approach

What is the motivation for this PR?

Ondatra is an open-source framework. We plan to contribute tests developed with it to the SONiC community.

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

[linux-foundation-easycla]

• ✅login: vamsipunati / (19aca7a)

The committers listed above are authorized under a signed CLA.

[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.................................................Failed
- hook id: trailing-whitespace
- exit code: 1
- files were modified by this hook

Fixing sdn_tests/readme.md

fix end of files.........................................................Passed
check yaml...........................................(no files to check)Skipped
check for added large files..............................................Passed
check python ast.....................................(no files to check)Skipped
flake8...............................................(no files to check)Skipped
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>

[vamsipunati]

• ❌ - login: @vamsipunati . The commit (e711f99) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

@yxieca It is not allowing me to submit as corporate contributor. Can you help me with this?

[yxieca]

• ❌ - login: @vamsipunati . The commit (e711f99) is not authorized under a signed CLA. Please click here to be authorized. For further assistance with EasyCLA, please submit a support request ticket.

@yxieca It is not allowing me to submit as corporate contributor. Can you help me with this?

@vamsipunati I believe you will need to sign EasyCLA as individual contributor instead of Corp contributor.

[vamsipunati]

Thanks @yxieca. I signed as individual contributor. Can you please review now?

[kishanps]

Tagged for 202405 release