Remove unused enable_node_monitoring option

Back in 1a7f7245e7 we dropped the one
place this was used, but left all of the variable and definitions and
garbage around cluster/

cluster/vagrant/config-default.sh

@@ -52,9 +52,6 @@ MASTER_PASSWD=vagrant
 # Admission Controllers to invoke prior to persisting objects in cluster
 ADMISSION_CONTROL=NamespaceLifecycle,NamespaceExists,LimitRanger,SecurityContextDeny,ServiceAccount,ResourceQuota
 
-# Optional: Install node monitoring.
-ENABLE_NODE_MONITORING=true
-
 # Optional: Enable node logging.
 ENABLE_NODE_LOGGING=false
 LOGGING_DESTINATION=elasticsearch

cluster/vagrant/provision-master.sh

@@ -106,7 +106,6 @@ cat <<EOF >/srv/salt-overlay/pillar/cluster-params.sls
   service_cluster_ip_range: '$(echo "$SERVICE_CLUSTER_IP_RANGE" | sed -e "s/'/''/g")'
   cert_ip: '$(echo "$MASTER_IP" | sed -e "s/'/''/g")'
   enable_cluster_monitoring: '$(echo "$ENABLE_CLUSTER_MONITORING" | sed -e "s/'/''/g")'
-  enable_node_monitoring: '$(echo "$ENABLE_NODE_MONITORING" | sed -e "s/'/''/g")'
   enable_cluster_logging: '$(echo "$ENABLE_CLUSTER_LOGGING" | sed -e "s/'/''/g")'
   enable_node_logging: '$(echo "$ENABLE_NODE_LOGGING" | sed -e "s/'/''/g")'
   logging_destination: '$(echo "$LOGGING_DESTINATION" | sed -e "s/'/''/g")'

cluster/vagrant/util.sh

@@ -133,7 +133,6 @@ function create-provision-scripts {
     echo "MASTER_PASSWD='${MASTER_PASSWD}'"
     echo "KUBE_USER='${KUBE_USER}'"
     echo "KUBE_PASSWORD='${KUBE_PASSWORD}'"
-    echo "ENABLE_NODE_MONITORING='${ENABLE_NODE_MONITORING:-false}'"
     echo "ENABLE_NODE_LOGGING='${ENABLE_NODE_LOGGING:-false}'"
     echo "LOGGING_DESTINATION='${LOGGING_DESTINATION:-}'"
     echo "ENABLE_CLUSTER_DNS='${ENABLE_CLUSTER_DNS:-false}'"