gitignore: ignore check-qlit test

test introduced in 382176b4d78e070d119af8e0dcd00884c11bbec2

Signed-off-by: Carlo Marcelo Arenas Belón <carenas@gmail.com>
Reviewed-by: Eric Blake <eblake@redhat.com>
Signed-off-by: Michael Tokarev <mjt@tls.msk.ru>
