fix(e2e): use correct port for docker-machine iptables

scripts/kube-up.sh

@@ -57,8 +57,8 @@ setup_iptables() {
   echo "Adding iptables hackery for docker-machine..."
 
   local machine_ip=$(docker-machine ip "$machine")
-  if ! docker-machine ssh "${machine}" sudo /usr/local/sbin/iptables -t nat -L -n | grep -q "$machine_ip" | grep -q :8080; then
-    docker-machine ssh "${machine}" sudo /usr/local/sbin/iptables -t nat -I PREROUTING -p tcp -d "$machine_ip" --dport 8080 -j DNAT --to-destination 127.0.0.1:8080
+  if ! docker-machine ssh "${machine}" "sudo /usr/local/sbin/iptables -t nat -L -n" | grep -q "${machine_ip}" | grep -q ":${KUBE_PORT}"; then
+    docker-machine ssh "${machine}" "sudo /usr/local/sbin/iptables -t nat -I PREROUTING -p tcp -d ${machine_ip} --dport ${KUBE_PORT} -j DNAT --to-destination 127.0.0.1:${KUBE_PORT}"
   fi
 }