Fix k8s cluster configs to allow scraping from Prometheus

Change-Id: I2b23f69c0160ad4f16734b4b4d0553a69581be86
diff --git a/comac-in-a-box/Makefile b/comac-in-a-box/Makefile
index bfdaa3e..aa5faf6 100644
--- a/comac-in-a-box/Makefile
+++ b/comac-in-a-box/Makefile
@@ -90,6 +90,7 @@
 		-e "{'kube_version' : $(K8S_VERSION)}" \
 		-e "{'kube_network_plugin_multus' : True, 'multus_version' : stable}" \
 		-e "{'kube_proxy_mode': iptables}" \
+		-e "{'kube_proxy_metrics_bind_address' : 0.0.0.0:10249}" \
 		-e "{'kube_pods_subnet' : 192.168.0.0/17, 'kube_service_addresses' : 192.168.128.0/17}" \
 		-e "{'kube_apiserver_node_port_range' : 2000-36767}" \
 		-e "{'kubeadm_enabled': True}" \