standard config opt names: node monitoring

cluster/rackspace/config-default.sh

@@ -37,3 +37,6 @@ MINION_TAG="tags=${INSTANCE_PREFIX}-minion"
 MINION_NAMES=($(eval echo ${INSTANCE_PREFIX}-minion-{1..${RAX_NUM_MINIONS}}))
 KUBE_NETWORK=($(eval echo "10.240.{1..${RAX_NUM_MINIONS}}.0/24"))
 PORTAL_NET="10.0.0.0/16"
+
+# Optional: Install node monitoring.
+ENABLE_NODE_MONITORING=true

cluster/rackspace/util.sh

@@ -184,6 +184,7 @@ rax-boot-minions() {
     sed -e "s|DISCOVERY_ID|${DISCOVERY_ID}|" \
         -e "s|INDEX|$((i + 1))|g" \
         -e "s|CLOUD_FILES_URL|${RELEASE_TMP_URL//&/\&}|" \
+        -e "s|ENABLE_NODE_MONITORING|${ENABLE_NODE_MONITORING:-false}|" \
     $(dirname $0)/rackspace/cloud-config/minion-cloud-config.yaml > $KUBE_TEMP/minion-cloud-config-$(($i + 1)).yaml