Add option for keeping the stdout for nonzero rank processing units

[bhazelton]

Description

Add an option to the run_param_pyuvsim.py script and the run_uvsim and run_uvdata_uvsim functions to allow users to keep the output from nonzero ranks for debugging purposes.

Also did some CI & testing updates now that the new version of pyradiosky is out. Biggest change is to add a new CI job that runs the tests using the minimum required versions of pyuvdata and pyradiosky to ensure those versions work. This exposed some bugs that I also fixed. I also removed some "pragma: no cover" markings for code that runs under the newest version of pyradiosky and added tests to cover some newly exposed lines.

Motivation and Context

By default, output from nonzero ranks is surpassed (set to /dev/null). This adds an option, useful for debugging purposes, to keep that output.

Types of changes

• [ ] Bug fix (non-breaking change which fixes an issue)
• [x] New feature (non-breaking change which adds functionality)
• [ ] Breaking change (fix or feature that would cause existing functionality to change)
• [ ] Reference simulation update or replacement
• [ ] Documentation change (documentation changes only)
• [ ] Version change
• [x] Build or continuous integration change

Checklist:

For all pull requests:

• [x] I have read the contribution guide.
• [x] My code follows the code style of this project.

New feature checklist:

• [x] I have added or updated the docstrings associated with my feature using the numpy docstring format.
• [ ] I have updated the documentation to highlight my new feature (if appropriate).
• [ ] I have added tests to cover my new feature.
• [x] All new and existing tests pass.
• [ ] I have checked that I reproduce the reference simulations or if there are differences they are explained below (if appropriate). If there are changes that are correct, I will update the reference simulation files after this PR is merged.
• [ ] I have checked (e.g., using the benchmarking tools) that this change does not significantly increase typical runtimes. If it does, I have included a justification in the comments on this PR.
• [ ] I have updated the CHANGELOG.

[codecov[bot]]

Codecov Report

Merging #387 (efadecf) into main (62e8943) will increase coverage by 0.00%. The diff coverage is 100.00%.

@@           Coverage Diff           @@
##             main     #387   +/-   ##
=======================================
  Coverage   99.32%   99.33%           
=======================================
  Files          13       13           
  Lines        2067     2094   +27     
=======================================
+ Hits         2053     2080   +27     
  Misses         14       14           

Impacted Files	Coverage Δ
pyuvsim/mpi.py	100.00% <ø> (ø)
pyuvsim/simsetup.py	99.89% <100.00%> (+<0.01%)	:arrow_up:
pyuvsim/uvsim.py	99.42% <100.00%> (ø)

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