add CNI plugins to Vagrant install

Vagrantfile

@@ -137,6 +137,10 @@ def configureLinuxProvisioners(vmCfg)
 		privileged: true,
 		path: './scripts/vagrant-linux-priv-consul.sh'
 
+	vmCfg.vm.provision "shell",
+		privileged: true,
+		path: './scripts/vagrant-linux-priv-cni.sh'
+
 	vmCfg.vm.provision "shell",
 		privileged: true,
 		path: './scripts/vagrant-linux-priv-vault.sh'

scripts/vagrant-linux-priv-cni.sh

+#!/usr/bin/env bash
+
+set -o errexit
+
+VERSION="v0.8.2"
+DOWNLOAD=https://github.com/containernetworking/plugins/releases/download/${VERSION}/cni-plugins-linux-amd64-${VERSION}.tgz
+TARGET_DIR=/opt/cni/bin
+
+function install_cni() {
+	mkdir -p ${TARGET_DIR}
+	if [[ -e ${TARGET_DIR}/${VERSION} ]] ; then
+		return
+	fi
+
+	wget -q -O /tmp/cni-plugins.tar.gz ${DOWNLOAD}
+	tar -xf /tmp/cni-plugins.tar.gz -C ${TARGET_DIR}
+	touch ${TARGET_DIR}/${VERSION}
+}
+
+install_cni