Address test gap to verify portchannel member packet forwarding w.r.t SAI_LAG_MEMBER_ATTR_EGRESS/INGRESS enable/disable state

[abdosi]

trafficstars

Address below test gap: https://github.com/sonic-net/sonic-mgmt/issues/15070

Verifies: Added new test case to validate LAG MEMBER SAI attribute SAI_LAG_MEMBER_ATTR_EGRESS and SAI_LAG_MEMBER_ATTR_INGRESS value of enable/disable

On disable:
1. Control packets to/from should not be processed (BGP down)
2. Data packets from/to CPU not be processed (ping to IP interface should faild)
3. Data packets across ports not to be processed  (ping to another peer ip should fail)

   On enable:
   Reverse of all the above 3 scenarios,

[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 tests/pc/test_lag_member_forwarding.py

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/common/devices/sonic.py:2237:20: F821 undefined name 'rc'
tests/pc/test_lag_member_forwarding.py:10:1: E302 expected 2 blank lines, found 1
tests/pc/test_lag_member_forwarding.py:22:5: F841 local variable 'bgp_config' is assigned to but never used

flake8...............................................(no files to check)Skipped
...
[truncated extra lines, please run pre-commit locally to view full check results]

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>

[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 tests/pc/test_lag_member_forwarding.py

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

[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 tests/pc/test_lag_member_forwarding.py

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/pc/test_lag_member_forwarding.py:86:121: E501 line too long (124 > 120 characters)
tests/pc/test_lag_member_forwarding.py:93:121: E501 line too long (139 > 120 characters)

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>