Comment 26 for bug 1720305

Reviewed: https://review.opencontrail.org/37150
Committed: http://github.com/Juniper/contrail-test-ci/commit/c802ca26eadbedadb9a35a2d5a4e9573f7644d95
Submitter: Zuul (<email address hidden>)
Branch: R4.1

commit c802ca26eadbedadb9a35a2d5a4e9573f7644d95
Author: skiranh <email address hidden>
Date: Fri Jul 14 16:15:48 2017 +0530

Adding fixture for nic based mirroring tests.
- SHould cover configuring the nic vlan id
- Should have methods to send traffic.
- Should have checks to check if the vlan configured matches the packets
that have that vlan id.
- Recent patch should have centralised code. There is only 1 function
now that should handle both legacy and nic config calls.

Partial-bug: #1720305
Change-Id: I0025402de15a541042bdea6916b0cf619296b708