install-script,autoyast: Set "openSUSE" as a product
openSUSE Tumbleweed ISOs now allow the user to either install Tumbleweed or MicroOS, without fallbacking to one of those by default.
While we still don't support MicroOS, the safest option for us is to always set the product as "openSUSE". Whenever MicroOS is added to osinfo-db, we use the distro name to differentiate the product to be used.
Signed-off-by: Fabiano Fidêncio fidencio@redhat.com