de3f4a8 Sleep a bit less in notification tests (to fix KDE postinst)

Authored and Committed by adamwill 6 years ago
    Sleep a bit less in notification tests (to fix KDE postinst)
    
    In F28 tests, the notification 'counter' thing that we rely on
    to check there's only *one* notification seems to suddenly
    disappear...right around 10 minutes after the desktop starts up,
    which is just how long our test idles for to catch crashes that
    happen a little after boot. That causes test fails. Let's try
    just cutting the wait down to 8 minutes to see if that helps.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>