Update PythonPackagesTests.cs (#4673)
Update PythonPackagesTests.cs (#4673)

* Update PythonPackagesTests.cs

Detecting issues related to https://stackoverflow.com/questions/56957512/pythonnet-missing-addreference-method, which has shown up for me when using lean (https://www.quantconnect.com/forum/discussion/9054/lean-vagrant-box/p1).

* Update PythonPackagesTests.cs

Named test

* Name change of MonoTest to SanityClrInstallation 

Name suggestion by @Martin-Molinero

* Fix minor typo

Co-authored-by: Martin-Molinero <54669547a225ff20cba8b75a4adca540eef25858@quantconnect.com>
JKarathiya/Lean,jameschch/Lean,jameschch/Lean,AlexCatarino/Lean,StefanoRaggi/Lean,jameschch/Lean,JKarathiya/Lean,StefanoRaggi/Lean,QuantConnect/Lean,AlexCatarino/Lean,QuantConnect/Lean,StefanoRaggi/Lean,JKarathiya/Lean,StefanoRaggi/Lean,jameschch/Lean,JKarathiya/Lean,AlexCatarino/Lean,AlexCatarino/Lean,QuantConnect/Lean,jameschch/Lean,QuantConnect/Lean,StefanoRaggi/Lean