title: Request rejected with Options when fetching the VPCs with Authorization header
body: <p>Generating the request to list the vpc details with IAM token which is kept in authorization header  - The request has been generated from React App - </p>
  
  <pre><code>https://urls.cloud.ibm.com/v1/vpcs?version=2019-08-06&amp;generation=1
  </code></pre>
  
  <p>Configuration </p>
  
  <pre><code>config = {
          headers: {
          "Authorization": "Bearer lmtmlmlm",
          "Access-Control-Allow-Origin": "*"
        }
      }
  </code></pre>
  
  <p>The request was failed during the pre-flight request, it seems that the browser request headers are asking the server for permissions to make the actual request. </p>
  
  <p>Can you suggest to overcome the problem.</p>