Replace redis-cli with sonic-db-cli for the test cases could be run for image with or without ENABLE_MULTIDB=y

[Pan-XT]

Description of PR

Modify /tests/iface_namingmode/test_iface_namingmode.py and /tests/generic_config_updater/test_mmu_dynamic_threshold_config_update.py
Replace redis-cli with sonic-db-cli for the test cases could be run for image with or without ENABLE_MULTIDB=y

Summary:
Fixes # (issue)

Type of change

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

Approach

What is the motivation for this PR?

sonic-mgmt tests for multi DB

How did you do it?

Replace redis-cli with sonic-db-cli

How did you verify/test it?

For test_iface_namingmode.py, run
./run_tests.sh -n vms-kvm-t0 -d vlab-01 -c iface_namingmode/test_iface_namingmode.py -f vtestbed.yaml -i ../ansible/veos_vtb -e "--neighbor_type=sonic"
in image with or without ENABLE_MULTIDB=y, results are both
38 passed, 22 skipped, 1 warning

For test_mmu_dynamic_threshold_config_update.py, run
./run_tests.sh -n vms-kvm-t0 -d vlab-01 -c generic_config_updater/test_mmu_dynamic_threshold_config_update.py -f vtestbed.yaml -i ../ansible/veos_vtb -e "--neighbor_type=sonic"
in image with or without ENABLE_MULTIDB=y, results are both
generic_config_updater/test_mmu_dynamic_threshold_config_update.py::test_dynamic_th_config_updates[replace] PASSED [100%]
instead of SKIPPED

[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_mmu_dynamic_threshold_config_update.py:95:121: E501 line too long (124 > 120 characters)
tests/iface_namingmode/test_iface_namingmode.py:320:15: E275 missing whitespace after keyword
tests/iface_namingmode/test_iface_namingmode.py:554:15: E275 missing whitespace after keyword

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.................................................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/iface_namingmode/test_iface_namingmode.py:320:15: E275 missing whitespace after keyword
tests/iface_namingmode/test_iface_namingmode.py:554:15: E275 missing whitespace after keyword

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>