Fix test=True for states without changes

If no changes are going to be made, result should be True or False, None
is reserved for when changes are going to be made.

salt/states/test.py

@@ -57,7 +57,7 @@ def succeed_without_changes(name):
         'comment': 'Success!'
     }
     if __opts__['test']:
-        ret['result'] = None
+        ret['result'] = True
         ret['comment'] = 'If we weren\'t testing, this would be a success!'
     return ret
 
@@ -79,7 +79,7 @@ def fail_without_changes(name):
     }
 
     if __opts__['test']:
-        ret['result'] = None
+        ret['result'] = False
         ret['comment'] = 'If we weren\'t testing, this would be a failure!'
 
     return ret