Support new features: HTTP3/IPv6/ProxyProtocol/OpenTelemetry (#1272)

tools/hack/create-cluster.sh

@@ -43,6 +43,8 @@ cat <<EOF > "tools/hack/cluster.conf"
 # cluster.conf
 kind: Cluster
 apiVersion: kind.x-k8s.io/v1alpha4
+networking:
+  ipFamily: dual
 nodes:
 - role: control-plane
   kubeadmConfigPatches:

tools/hack/prebuild.sh

@@ -15,7 +15,7 @@ for repo in ${envoy_repos[@]}; do
     if [ -e external/$repo ];then
         continue
     fi
-    cp -rP envoy/$repo  external/$repo
+    cp -RP envoy/$repo  external/$repo
     cd external/$repo
     echo "gitdir: /parent/.git/modules/envoy/$repo" > .git
     if [ -f "go.mod" ]; then
@@ -30,7 +30,7 @@ for repo in ${istio_repos[@]}; do
     if [ -e external/$repo ];then
         continue
     fi
-    cp -rP istio/$repo external/$repo
+    cp -RP istio/$repo external/$repo
     cd external/$repo
     echo "gitdir: /parent/.git/modules/istio/$repo" > .git
     if [ -f "go.mod" ]; then