Enable the skip if unavailable for the cisco-openh264 repo
    
    With the cisco-openh264 being a baseurl and not mirroed if the repo
    is unavailable all updates fail. We should enable users to get all
    the standard Fedora updates if for some reason this repo is not working
    which at times is out of the Fedora infra team's control.
    
    Signed-off-by: Peter Robinson <pbrobinson@fedoraproject.org>