Fix rename refactor unit tests

[DonJayamanne]

Fixes #1953

This pull request:

• Has a title summarizes what is changing
• Includes a news entry file (remember to thank yourself!)
• Has unit tests & code coverage is not adversely affected (within reason)
• Works on all actively maintained versions of Python (e.g. Python 2.7 & the latest Python 3 release)
• Works on Windows 10, macOS, and Linux (e.g. considered file system case-sensitivity)

[d3r3kk]

Fails in Windows tests, perhaps because EOLUsedByRope in Windows is the dreaded \r\n?

After that is fixed I say good!

[DonJayamanne]

This is just rope using different separators. Looks like its inconsistent. I assumed it was using \n throughout, guess I was wrong.

[codecov]

Codecov Report

Merging #1955 into master will increase coverage by 0.08%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #1955      +/-   ##
==========================================
+ Coverage   74.48%   74.56%   +0.08%     
==========================================
  Files         285      285              
  Lines       13359    13359              
  Branches     2390     2390              
==========================================
+ Hits         9950     9961      +11     
+ Misses       3271     3260      -11     
  Partials      138      138

Impacted Files	Coverage Δ
src/client/debugger/PythonProcess.ts	47.91% <0%> (+2.08%)	⬆️
src/client/debugger/mainV2.ts	81.12% <0%> (+2.4%)	⬆️

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