COMP: Update ctkMacroSetupQt to enable QT_USE_QTTEST if BUILD_TEESTING is ON

CMake/ctkMacroSetupQt.cmake

@@ -20,6 +20,7 @@ MACRO(ctkMacroSetupQt)
 
     SET(QT_USE_QTNETWORK ON)
     SET(QT_USE_QTSQL ON)
+    SET(QT_USE_QTTEST ${BUILD_TESTING})
     INCLUDE(${QT_USE_FILE})
 
   ELSE(QT4_FOUND)