Feature/libe env script shell

[shuds13]

Launch user environment scripts in shell.

[codecov]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 76.51%. Comparing base (ff96f93) to head (c899581).
Report is 29 commits behind head on develop.

Additional details and impacted files

@@             Coverage Diff             @@
##           develop    #1392      +/-   ##
===========================================
+ Coverage    73.95%   76.51%   +2.56%     
===========================================
  Files           90       88       -2     
  Lines         8294     8019     -275     
  Branches      1476     1435      -41     
===========================================
+ Hits          6134     6136       +2     
+ Misses        1942     1665     -277     
  Partials       218      218              

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[n01r]

Sorry, I got another error but it looks like this one is on my side so I deleted my comment.

[jmlarson1]

Do we want a test of the shell=use_shell capability for launcher.launch?

[jlnav]

This time around, I'm not sure there's that much to test since the added keyword is just passed through to subprocess. And the code specifying the parameter is naturally covered.