repo:voltha-system-tests: make targets failing with python v3.8

git clone voltha-system-tests

cd voltha-system-tests

## Install alternate python interpeter

virtualenv -p /usr/bin/python3.8 .venv

1. Comment out /zdw/ dependency in requirements.txt

python -m pip install -r ./requirements.txt

ollecting matplotlib==3.3.4 (from -r ./requirements.txt (line 52))
 Using cached matplotlib-3.3.4.tar.gz (37.9 MB)
 Installing build dependencies ... done
 Getting requirements to build wheel ... error
 error: subprocess-exited-with-error
  
 × Getting requirements to build wheel did not run successfully.
 │ exit code: 1
 ╰─> [40 lines of output]
     <string>:32: SetuptoolsDeprecationWarning: The test command is disabled and references to it are depreca
ted.
     !!
      
             ********************************************************************************
             Please remove any references to `setuptools.command.test` in all supported versions of the affec
ted package.
      
             By 2024-Nov-15, you need to update your project and remove deprecated calls
             or your builds will no longer be supported.
             ********************************************************************************
      
     !!