The TOS value reaches the FIB rule core via different call paths when an
input route is looked up compared to an output route.

Re-test TOS matching with input routes to exercise these code paths.

Pass the 'iif' and 'from' selectors separately from the 'get{,no}match'
variables as otherwise the test name is too long to be printed without
misalignments.
Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Link: https://patch.msgid.link/20240814111005.955359-6-idosch@nvidia.comSigned-off-by: Jakub Kicinski <kuba@kernel.org>