Fix version update unit test

[emanspeaks]

Previously, the unit test test_version_update_pypi() was not correctly loading the server configuration. The test was passing simply because the first assertion assumed a configuration was used that happened to match the default configuration. If the configuration of f90_config.json were to be changed in a way that should affect the test, the test would have failed.

The unit test is updated to match the paradigm of the other unit tests in this file, deferring the server init to unittest_server_init(), which does correctly load the configuration.

Furthermore, if the unit tests are run in a conda environment, the test was erroneously failing. In such an environment, the expected outcome should be different than the one assumed by the CI. In order to satisfy both, the unit test now checks the environment and determines the expected value for the assertion accordingly so it passes in all environments.

This supersedes #346 and incorporates some changes that crept into #341. Recommend merging this first, and then the #341 PR can be rectified.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Comparison is base (8263781) 87.51% compared to head (8d55ac8) 87.51%.

Additional details and impacted files

@@           Coverage Diff           @@
##           master     #347   +/-   ##
=======================================
  Coverage   87.51%   87.51%           
=======================================
  Files          35       35           
  Lines        4756     4756           
=======================================
  Hits         4162     4162           
  Misses        594      594           

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[emanspeaks]

This one hasn't seen any activity for a bit, so wanted to poke on it. It's fairly minor since it's only affecting unit tests, but it is something that was split off from #341 already in an attempt to descope that one a bit. I think this one should be ready to go and hopefully isn't too controversial.