Kube server binary is no longer bundled in repo
Kube server binary is no longer bundled in repo

In latest kubernetes releases like 1.5.3 the server binaries
are no longer present in the repo. Instead on needs to get
them using get-kube-binaries.sh script. This patch updates the
vagrant README to reflect the changes in installation process.

Signed-off-by: Akash Gangil <b905a9fb983a6d48ff8a8245286b2206b3abdef3@outlook.com>

shettyg/ovn-kubernetes,shettyg/ovn-kubernetes,shettyg/ovn-kubernetes