title: What is the "speckle-umbrella" service account associated with Google Cloud SQL instances?
body: <p>On the instance details page of my Google Cloud SQL instance, I see that there's a "Service account" card on the dashboard with a value.  The domain of which includes <strong>speckle-umbrella</strong>.  This account doesn't show up in the IAM settings or any service account lists.  Regarding its purpose, the most I've been able to find is <a href="https://stackoverflow.com/questions/48759815/error-uploading-csv-to-google-cloud-storage-through-cloud-sql-api">this question</a> but it seems to only deal with granting the account privileges.  A couple of questions:</p>
  
  <ul>
  <li>What is this account for?</li>
  <li>Why is this account not enumerated with the rest of the service accounts?</li>
  </ul>