New version 31.9-1
    
    - Remove the function get_structure (vponcova)
    - Remove the function apply_structure (vponcova)
    - Remove the decorator (vponcova)
    - Add the class DBusData (vponcova)
    - Give payload a hook for adding disabled repos. (riehecky)
    - Extend the function generate_string_from_data (vponcova)
    - Blivet-GUI should wait for the storage threads to finish (#1696478)
      (vponcova)
    - network: do not pass None value from NM device object to data holder
      (#1695967) (rvykydal)
    - Handle bytes and strings from RPM (#1693766) (vponcova)
    - network module: add network module unit tests (rvykydal)