Comment 8 for bug 1543936

Reviewed: https://review.opencontrail.org/17073
Committed: http://github.org/Juniper/contrail-controller/commit/333bc50b97117faca3d9b2b9e7eea831ffa1c451
Submitter: Zuul
Branch: R2.20

commit 333bc50b97117faca3d9b2b9e7eea831ffa1c451
Author: Ashok Singh <email address hidden>
Date: Wed Feb 10 00:50:01 2016 -0800

Add support for new argument to vrouter-port-control

The vif.py invokes vrouter-port-control script with an additional argument. This new
argument is valid only for mainline, but since vif.py is present in a repo which is common
for R2.20, R2.21.x and R.22.x, vrouter-port-control script in branches R2.20, R2.21.x and
R.22.x should be updated to accept and ignore this argument.

Change-Id: I7fdf844f9366b33ce3fa3a64f83586f946d800fa
Closes-Bug: #1543936