- use new vpp ref build: 17.04-rc0~353-g6f6f52a~b1979_amd64
- build tested by semiweekly job:
https://jenkins.fd.io/view/csit/job/csit-vpp-verify-master-ubuntu1604-semiweekly/5/
Change-Id: I0b3a2be26a263f61f150e85d3b484984fa6539b3 Signed-off-by: Jan Gelety <jgelety@cisco.com>