[dts] [PATCH V2]tests: stop port when configure tx_vlan

[Liu, Yong]

Thanks Lijuan. Applied.

On 01/25/2018 07:27 PM, Lijuan Tu wrote:
> dpdk commit 597f9fafe13b ("app/testpmd: convert to new Tx offloads
> API").
> This patch requires us to stop port when configure the TX offloads.
>
> Signed-off-by: Lijuan Tu<lijuanx.a.tu at intel.com>
> ---
>   tests/TestSuite_dual_vlan.py | 22 ++++++++++++++++++++++
>   tests/TestSuite_vf_vlan.py   |  3 +++
>   tests/TestSuite_vlan.py      |  3 +++
>   3 files changed, 28 insertions(+)