docs: def datadir_exists(name):
      '''
      .. versionadded:: 2016.3.0
  
      Checks if postgres data directory has been initialized
  
      CLI Example:
  
      .. code-block:: bash
  
          salt '*' postgres.datadir_exists '/var/lib/pgsql/data'
  
      name
          Name of the directory to check
      '''
      _version_file = os.path.join(name, 'PG_VERSION')
      _config_file = os.path.join(name, 'postgresql.conf')
  
      return os.path.isfile(_version_file) and os.path.isfile(_config_file)