fix cloudwatch config editor

public/app/plugins/datasource/cloudwatch/partials/config.html

@@ -30,7 +30,7 @@
   </ul>
   <div class="clearfix"></div>
 </div>
-<div class="tight-form">
+<div class="tight-form" ng-show="current.jsonData.access === 'direct'">
   <ul class="tight-form-list">
     <li class="tight-form-item" style="width: 160px">
 			Secret Access Key