Update e2e

This change contains following:
 - update kind version to 0.8.1
 - update setup script due to update
 - add teardown script
 - update README

e2e/setup_cluster.sh

@@ -3,32 +3,64 @@ set -o errexit
 
 export PATH=${PATH}:./bin
 
+kind_network='kind'
 reg_name='kind-registry'
 reg_port='5000'
 running="$(docker inspect -f '{{.State.Running}}' "${reg_name}" 2>/dev/null || true)"
 if [ "${running}" != 'true' ]; then
+  # run registry and push the multus image
   docker run -d --restart=always -p "${reg_port}:5000" --name "${reg_name}" registry:2
+  docker build -t localhost:5000/multus:e2e ..
+  docker push localhost:5000/multus:e2e
 fi
-reg_ip="$(docker inspect -f '{{.NetworkSettings.IPAddress}}' "${reg_name}")"
+reg_host="${reg_name}"
+if [ "${kind_network}" = "bridge" ]; then
+    reg_host="$(docker inspect -f '{{.NetworkSettings.IPAddress}}' "${reg_name}")"
+fi
+echo "Registry Host: ${reg_host}"
 
+# deploy cluster with kind
 cat <<EOF | kind create cluster --config=-
 kind: Cluster
 apiVersion: kind.x-k8s.io/v1alpha4
 containerdConfigPatches:
 - |-
   [plugins."io.containerd.grpc.v1.cri".registry.mirrors."localhost:${reg_port}"]
-    endpoint = ["http://${reg_ip}:${reg_port}"]
+    endpoint = ["http://${reg_host}:${reg_port}"]
 nodes:
   - role: control-plane
   - role: worker
   - role: worker
 EOF
 
+cat <<EOF | kubectl apply -f -
+apiVersion: v1
+kind: ConfigMap
+metadata:
+  name: local-registry-hosting
+  namespace: kube-public
+data:
+  localRegistryHosting.v1: |
+    host: "localhost:${reg_port}"
+    help: "https://kind.sigs.k8s.io/docs/user/local-registry/"
+EOF
+
+containers=$(docker network inspect ${kind_network} -f "{{range .Containers}}{{.Name}} {{end}}")
+needs_connect="true"
+for c in $containers; do
+  if [ "$c" = "${reg_name}" ]; then
+    needs_connect="false"
+  fi
+done
+if [ "${needs_connect}" = "true" ]; then
+  docker network connect "${kind_network}" "${reg_name}" || true
+fi
+
 kind export kubeconfig
 sudo env PATH=${PATH} koko -d kind-worker,eth1 -d kind-worker2,eth1
 sleep 1
 kubectl -n kube-system wait --for=condition=available deploy/coredns --timeout=300s
-kubectl create -f https://raw.githubusercontent.com/intel/multus-cni/master/images/multus-daemonset.yml
+kubectl create -f multus-daemonset.yml
 sleep 1
 kubectl -n kube-system wait --for=condition=ready -l name=multus pod --timeout=300s
 kubectl create -f cni-install.yml