vision: include original Likelihood score

Add the original likelihood value into the response from the vision api
alongside the boolean values

Author: rtw

packages/vision/src/index.js

@@ -1558,6 +1558,8 @@ Vision.formatFaceAnnotation_ = function(faceAnnotation) {
 
       formattedFaceAnnotation[shortenedProp] =
         Vision.gteLikelihood_(LIKELY, faceAnnotation[prop]);
+
+      formattedFaceAnnotation[prop] = faceAnnotation[prop];
     }
   }