docs: def parse_connection_string(value):
      """Original Governor stores connection strings for each cluster members if a following format:
          postgres://{username}:{password}@{connect_address}/postgres
      Since each of our patroni instances provides own REST API endpoint it's good to store this information
      in DCS among with postgresql connection string. In order to not introduce new keys and be compatible with
      original Governor we decided to extend original connection string in a following way:
          postgres://{username}:{password}@{connect_address}/postgres?application_name={api_url}
      This way original Governor could use such connection string as it is, because of feature of `libpq` library.
  
      This method is able to split connection string stored in DCS into two parts, `conn_url` and `api_url`"""
  
      scheme, netloc, path, params, query, fragment = urlparse(value)
      conn_url = urlunparse((scheme, netloc, path, params, '', fragment))
      api_url = ([v for n, v in parse_qsl(query) if n == 'application_name'] or [None])[0]
      return conn_url, api_url