Name a cluster and use it to make forwarding rules for GCE

cluster/vsphere/templates/create-dynamic-salt-files.sh

@@ -20,6 +20,7 @@
 
 mkdir -p /srv/salt-overlay/pillar
 cat <<EOF >/srv/salt-overlay/pillar/cluster-params.sls
+instance_prefix: '$(echo "$INSTANCE_PREFIX" | sed -e "s/'/''/g")'
 node_instance_prefix: $NODE_INSTANCE_PREFIX
 portal_net: $PORTAL_NET
 enable_cluster_monitoring: $ENABLE_CLUSTER_MONITORING