Update os-vif to 1.4.0
Update os-vif to 1.4.0

Change-Id: I5e05f980096f4f51eb6a652eff5476fe7ba0649a
Depends-on: I782111ef47d15321804e5b0e1b6f04a0fbfd8dfe

openstack/rpm-packaging,openstack/rpm-packaging