[dts] [patch v4] enable ixia send_number_packet function

[Liu, Yong]

Thanks Fei, applied.

On 09/30/2017 07:20 PM, wang fei wrote:
> framework/etgen.py: add a function to enable ixia to send designatednumber of packets,
>                      this function is set for test suite nic_single_core_perf test
>
> Signed-off-by: wang fei<feix.y.wang at intel.com>