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

<h5>CloudWatch details</h5>

<div class="tight-form">
  <ul class="tight-form-list">
    <li class="tight-form-item" style="width: 80px">
      Region
    </li>
    <li>
      <input type="text" class="tight-form-input input-large" ng-model='current.jsonData.region' placeholder="" required></input>
    </li>
  </ul>
  <div class="clearfix"></div>
</div>
<div class="tight-form last">
  <ul class="tight-form-list">
    <li class="tight-form-item" style="width: 80px">
      Access Key Id
    </li>
    <li>
      <input type="text" class="tight-form-input input-large" ng-model='current.jsonData.accessKeyId' placeholder="" required></input>
    </li>
    <li class="tight-form-item">
      Secret Access Key
    </li>
    <li>
      <input type="password" class="tight-form-input input-large" ng-model='current.jsonData.secretAccessKey' placeholder="" required></input>
    </li>
  </ul>
  <div class="clearfix"></div>
</div>