(#2434) Don't hardcode platform in NUnitSetup
(#2434) Don't hardcode platform in NUnitSetup

Don't hardcode the platform type in the config to windows in the
Nunit Setup. If the platform type is set to windows, it will try to
run powershell when the tests are run on Linux.

TheBigBear/choco,jberezanski/choco,jberezanski/choco,TheBigBear/choco,TheBigBear/choco,jberezanski/choco