Make fully containerized build
Make fully containerized build

Run 'vendor' part inside Docker container in
case of containerized build.

Change-Id: I6564ef4a7debb2735e8c1c847161442287a4b8d4

projectcalico/calico-cni,projectcalico/calico-rkt,projectcalico/calico-cni,projectcalico/calico-cni