Update of VPP_STABLE_VER files and DPDK_STABLE_VER file
- use new vpp ref build - ubuntu 16.04:
17.07-rc0~
144-g36c1308~b2247_amd64
- use new vpp ref build - centos7:
17.07-rc0~
268-gc7409dc~b2371_amd64
- use new DPDK version:
17.05-vpp3
- builds tested by semiweekly jobs:
https://jenkins.fd.io/view/csit/job/csit-vpp-verify-master-ubuntu1604-semiweekly/39/
https://jenkins.fd.io/view/csit/job/csit-vpp-verify-master-centos7-semiweekly/39/
Change-Id: I7ed3e1011ae6b1e9fa9a6a3fd98fc5ebcb8bfdf9
Signed-off-by: Jan Gelety <jgelety@cisco.com>