Merge pull request #97934 from mattcary/loopback-upstream

Disallow local loopback for volume hosts

cluster/gce/gci/configure-helper.sh

@@ -1999,6 +1999,7 @@ function start-kube-controller-manager {
   params+=("--kubeconfig=${config_path}" "--authentication-kubeconfig=${config_path}" "--authorization-kubeconfig=${config_path}")
   params+=("--root-ca-file=${CA_CERT_BUNDLE_PATH}")
   params+=("--service-account-private-key-file=${SERVICEACCOUNT_KEY_PATH}")
+  params+=("--volume-host-allow-local-loopback=false")
   if [[ -n "${ENABLE_GARBAGE_COLLECTOR:-}" ]]; then
     params+=("--enable-garbage-collector=${ENABLE_GARBAGE_COLLECTOR}")
   fi