- use new vpp ref build: 16.12-rc0~136-gf2e6a2d~b1159_amd64
- build tested by semiweekly job:
https://jenkins.fd.io/job/csit-vpp-verify-master-semiweekly/1039/
Change-Id: Ib1a695d1d024ac8711d8ab5bf9151b1ea632bc17 Signed-off-by: Jan Gelety <jgelety@cisco.com>