bump master cidr range from /30 to /29

cluster/aws/templates/configure-vm-aws.sh

@@ -91,7 +91,7 @@ EOF
   if [[ ! -z "${KUBELET_APISERVER:-}" ]] && [[ ! -z "${KUBELET_CERT:-}" ]] && [[ ! -z "${KUBELET_KEY:-}" ]]; then
     cat <<EOF >>/etc/salt/minion.d/grains.conf
   kubelet_api_servers: '${KUBELET_APISERVER}'
-  cbr-cidr: 10.123.45.0/30
+  cbr-cidr: 10.123.45.0/29
 EOF
   else
     # If the kubelet is running disconnected from a master, give it a fixed
@@ -110,7 +110,7 @@ salt-node-role() {
 grains:
   roles:
     - kubernetes-pool
-  cbr-cidr: 10.123.45.0/30
+  cbr-cidr: 10.123.45.0/29
   cloud: aws
   api_servers: '${API_SERVERS}'
 EOF