selftest: validate RSS+ntuple filters with nonzero ring_cookie

Test creates an ntuple filter with 'action 2' and an RSS context whose
 indirection table has entries 0 and 1.  Resulting traffic should go to
 queues 2 and 3; verify that it never hits queues 0 and 1.

Signed-off-by: Edward Cree <ecree.xilinx@gmail.com>
Link: https://patch.msgid.link/114afdf4d2867f72ed27751e8e08fe8b128a8529.1731499022.git.ecree.xilinx@gmail.com


Signed-off-by: Jakub Kicinski <kuba@kernel.org>