Update python-watchdog to version 2.1.9 / rev 15 via SR 990798
    
    https://build.opensuse.org/request/show/990798
    by user dirkmueller + RBrownFactory
    - update to 2.1.9:
      * [fsevents] Fix flakey test to assert that there are no errors when stopping the emitter.
      * [inotify] Suppress occasional ``OSError: [Errno 9] Bad file descriptor`` at shutdown.
      * [watchmedo] Make ``auto-restart`` restart the sub-process if it terminates.
      * [watchmedo] Avoid zombie sub-processes when running ``shell-command`` without ``--wait``.
      * Fix adding failed emitters on observer schedule.
      * [inotify] Fix hang when unscheduling watch on a path in an unmounted filesystem.
      * [watchmedo] Fix broken parsing of ``--kill-after`` argument for the ``auto-restart`` command.
      * [watchmedo] Fix broken parsing of boolean arguments.
      * [watchmedo] Fix broken parsing of commands from ``auto-restart``, and ``shell-command``.
      * [watchmedo] Support setting