Merge pull request #5448 from jlowdermilk/fix-e2e

Delete master route on kube-down

cluster/gce/util.sh

@@ -785,6 +785,7 @@ function kube-down {
   local -a routes
   routes=( $(gcloud compute routes list --project "${PROJECT}" \
               --regexp "${NODE_INSTANCE_PREFIX}-.+" | awk 'NR >= 2 { print $1 }') )
+  routes+=("${MASTER_NAME}")
   while (( "${#routes[@]}" > 0 )); do
     echo Deleting routes "${routes[*]::10}"
     gcloud compute routes delete \