Pretty nice test coverage this way, covering all WinRM actions/logic by
using the winrmtest package. I had to extend/update/fix that package a
little here and there, but it now serves a nice purpose for testing
WinRM stuff…
* We now return an error when you set the script_path to
C:\Windows\Temp explaining this is currently not supported
* The fix in PR #1588 is converted to the updated setup in this PR
including the unit tests
Last thing to do is add a few tests for the WinRM communicator…