test/udev_test.pl: add "expected good" count
    
    Since 'test/udev-test.pl: count "good" results', we know how many
    checks succeeded. Add an "expected good" count to make that number
    more meaningful.
    
    (cherry picked from commit cbeb23d863d540408cd1fb274d78213f59639df2)
    
    Related: #1642728
    
    patch_name: 0542-test-udev_test.pl-add-expected-good-count.patch
    present_in_specfile: true
    location_in_specfile: 542
    squash_commits: true