Inconsistent PowerShell Executor.Command Properties

[ghost]

Sometimes we use powershell, powershell.exe and sometimes nothing.

We need to review each powershell test and choose a consistent pattern.

Compare 1086, 1050 and 1098 for examples.

[ghost]

After testing, I think we remove the word powershell or powershell.exe from the test itself since this is implied by the executor.command property and makes it easier to write the test case