- use new vpp ref build: 17.07-rc0~43-g8db1de8~b2146_amd64
- build tested by semiweekly job:
https://jenkins.fd.io/view/csit/job/csit-vpp-verify-master-ubuntu1604-semiweekly/24/
Change-Id: I7adc74b684fda2a16fb1edc673fb83c9c0ec13bf Signed-off-by: Jan Gelety <jgelety@cisco.com>