{Packaging} Add jar files for test

[kairu-ms]

Add jar files for test test_workspace_package to fix CI failure:

https://dev.azure.com/azure-sdk/public/_build/results?buildId=1132932&view=logs&jobId=1e6fba43-bdcf-51f0-a062-3712c33fbb51&j=1e6fba43-bdcf-51f0-a062-3712c33fbb51&t=a1e787eb-ec67-5c3d-79ec-0c68f4f59d65

filename = '/usr/lib64/az/lib/python3.6/site-packages/azure/cli/command_modules/synapse/tests/latest/assets/wordcount.jar'

    def getsize(filename):
        """Return the size of a file, reported by os.stat()."""
>       return os.stat(filename).st_size
E       FileNotFoundError: [Errno 2] No such file or directory: '/usr/lib64/az/lib/python3.6/site-packages/azure/cli/command_modules/synapse/tests/latest/assets/wordcount.jar'

/usr/lib64/python3.6/genericpath.py:50: FileNotFoundError
...
=========================== short test summary info ============================
FAILED tests/latest/test_synapse_scenario.py::SynapseScenarioTests::test_workspace_package

[yonzhan]

Package

[jiasli]

Test Deb Packages Buster shows ✅. Force merging.