develop more tests for etl, vis, analysis.py

[Clgould99]

We have a lot of tests for alfred, but not everything is totally covered.

etl.py is missing tests for copy csv and unpack interactive.
vis.py is missing tests for find_replaced_modules, swapped_mod_dataframes, label_bad_module
analysis.py is missing tests for the pca generation

I was running into issues when writing tests for these functions. I think the issue is the testing dataset we are using doesn't encompass the necessary data to run these functions.