title: Config Superset with SSO using Google OAuth API -- missing scope parameter?
body: <p>I have been trying to login to Superset (including registering new user) using Google OAuth API, following this instruction: <a href="https://aungmt.medium.com/superset-with-google-oauth-3ba7a1c1f459" rel="nofollow noreferrer">https://aungmt.medium.com/superset-with-google-oauth-3ba7a1c1f459</a></p>
  <p>All my search results shows me this config supposed to work. However, as soon as I click login button, I'm getting a <code>Error 400: invalid_request Missing required parameter: scope</code>. I quadruple checked my <em>superset_config.py</em> and it has <code>'scope': 'openid email profile'</code> in it.</p>
  <p>Anyone could shine a light on this?</p>