Resolve "Fix missing Rucio temp directory"

Duggan, Johnrequested to merge
149-fix-missing-rucio-temp-directory into dev

Summary of Changes

Creates the necessary temp directory before attempting to write the rucio config file.

I also modified the tests to not pull a .tgz file from a GitHub remote since it's a very small file. Testing was failing yesterday and this morning due to issues downloading that file. I don't see a reason why we need to ensure that we get the latest copy of that file for running tests, so I've just moved it into a test_files folder.

Checklist

  • The MR has a clear and concise title
  • Code is self-documented and follows style guidelines.
  • Automated tests are written and pass successfully.
  • Regression tests (e.g. manually triggered system tests, manual GUI/tool tests, ...) are performed to make sure the MR does not break anything (when applicable)
  • Readme file is present and up-to-date.

Documentation Updates

Additional Notes

Closes #149 (closed)

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