Add a basic L2 forwarding test suite which tests the correct
functionality of the forwarding facility built-in in the DPDK.
The tests are performed with different queues numbers per port.
Bugzilla ID: 1481
Signed-off-by: Luca Vizzarro <luca.vizzarro@arm.com>
Reviewed-by: Paul Szczepanek <paul.szczepanek@arm.com>
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Depends-on: series-32714 ("dts: add pktgen and testpmd changes")