Issue #3266140 by the_g_bomb, paulocs, lucassc, joshua1234511: Create...

  $fieldConfig->setDescription('Control whether the user must reset their password. If the password has expired, this field is automatically checked after the execution of Cron.');

  $fieldConfig->save();

}

/**

 * Remove duplicate rows in the password_policy_history table.

 */

function password_policy_update_8304() {

  $moduleHandler = \Drupal::service('module_handler');

  if ($moduleHandler->moduleExists('password_policy_history')) {

    $table_name = 'password_policy_history';

    $query = \Drupal::database()->query('DELETE t1 FROM {' . $table_name . '} t1 INNER JOIN {' . $table_name . '} t2 WHERE t1.id < t2.id AND t1.pass_hash = t2.pass_hash AND t1.timestamp = t2.timestamp');

    $query->execute();

  }

}