DTS testpmd and SCAPY integration

[Etelson, Gregory]

Hello Luca,

> Your proposal sounds rather interesting. Certainly enabling DTS to
> accept YAML-written tests sounds more developer-friendly and should
> enable quicker test-writing. As this is an extra feature though – and a
> nice-to-have, it should definitely be discussed in the DTS meetings as
> Honnappa suggested already.
>
> Another thing, I am not sure that the intention is that Scapy will be
> the only traffic generator supported. Could be very wrong here. In the
> case we'd support others too, how would you tackle this problem? We can
> discuss this in the meeting as well if needed.
>

The proposed design works with any DPDK, traffic generator, sniffer or debugger 
application that ether accepts input from STDIN or dumps output to SDTOUT.
I used testpmd / scapy in the example because that was the most obvious combo.

Regards,
Gregory