append mpi options to scorec in setup.py instead of default.py

[cekees]

Mandatory Checklist

Please ensure that the following criteria are met:

• [x] Title of pull request describes the changes/features
• [x] Request at least 2 reviewers
• [x] If new files are being added, the files are no larger than 100kB. Post the file sizes.
• [x] Code coverage did not decrease. If this is a bug fix, a test should cover that bug fix. If a new feature is added, a test should be made to cover that feature.
• [x] New features have appropriate documentation strings (readable by sphinx)
• [x] Contributor has read and agreed with CONTRIBUTING.md and has added themselves to CONTRIBUTORS.md

As a general rule of thumb, try to follow PEP8 guidelines.

Description

[codecov[bot]]

Codecov Report

Merging #1234 into master will not change coverage. The diff coverage is n/a.

@@           Coverage Diff           @@
##           master    #1234   +/-   ##
=======================================
  Coverage   52.74%   52.74%           
=======================================
  Files         531      531           
  Lines      109533   109533           
=======================================
  Hits        57777    57777           
  Misses      51756    51756           

Impacted Files	Coverage Δ
proteus/config/default.py	91.86% <ø> (ø)

---

Continue to review full report at Codecov.

Legend - Click here to learn more Δ = absolute <relative> (impact), ø = not affected, ? = missing data Powered by Codecov. Last update df0c174...abd5a4a. Read the comment docs.

[jhcollins]

@cekees I will check on onyx.