Merge pull request #11428 from Microsoft/ben/appveyor-output

Appveyor: show output also for normal unit tests

scripts/test.bat

@@ -8,6 +8,11 @@ if not "%BUILD_BUILDID%" == "" (
 	set ELECTRON_NO_ATTACH_CONSOLE=1
 )
 
+rem APPVEYOR Builds
+if not "%APPVEYOR%" == "" (
+	set ELECTRON_NO_ATTACH_CONSOLE=1
+)
+
 pushd %~dp0\..
 
 for /f "tokens=2 delims=:," %%a in ('findstr /R /C:"\"nameShort\":.*" product.json') do set NAMESHORT=%%~a