Update the topbar_generic needle
    
    We very rarely see this needle - only when we run the 'generic'
    tests on an Everything image instead of a Server one, which
    will usually only happen if we trigger it manually. I did this
    recently to test an anaconda update, and found it needs an
    update.
    
    Signed-off-by: Adam Williamson <awilliam@redhat.com>