title: How to rename a file while storing it to a GCS bucket
body: <p>I am reading a file from one of directory.post validations I need  to upload a file with appending timestamp to it. </p>
  
  <p>How do I rename the file while uploading it to a GCS bucket? </p>
  
  <p>I am using the Google Storage client. I see that for S3 the boto client has a method where we can pass a <code>upload_name=</code> parameter but I don't see a similar one in GCS.</p>