Add a topology-with-stacklight-example.yaml file

This removes all the references to stacklight from the
topology-example.yaml file. This means that for people
following the current documentation and creating their
topology configuration from topology-example.yaml StackLight
will not be deployed, neither logging nor monitoring.

In addition, this commit adds
a topology-with-stacklight-example.yaml file that does
include the topology configuration needed for deploying
StackLight. We will need some specific documentation
describing how to deploy StackLight.

Change-Id: I0b9a15c88c28f8175fcacc6bda38423a112b91df

etc/topology-example.yaml

@@ -2,13 +2,10 @@ nodes:
   node1:
     roles:
       - controller
-      - stacklight-collector
-      - stacklight-backend
       - openvswitch
   node[2-3]:
     roles:
       - compute
-      - stacklight-collector
       - openvswitch
 roles:
   controller:
@@ -38,12 +35,3 @@ roles:
     - neutron-openvswitch-agent
     - openvswitch-db
     - openvswitch-vswitchd
-  stacklight-backend:
-    - elasticsearch
-    - grafana
-    - influxdb
-    - kibana
-  stacklight-collector:
-    - heka
-    - stacklight-collector
-    - cron

etc/topology-with-stacklight-example.yaml

@@ -0,0 +1,55 @@
+# WARNING: this topology configuration adds "stacklight-collector" and
+# "stacklight-backend" roles for deploying StackLight. But note that StackLight
+# require Kubernetes 1.4 or higher. With this topology configuration and with
+# Kubernetes 1.3 the deployment will fail with an error indicating that
+# "spec.nodeName" is not supported by the downward API.
+
+nodes:
+  node1:
+    roles:
+      - controller
+      - stacklight-collector
+      - stacklight-backend
+      - openvswitch
+  node[2-3]:
+    roles:
+      - compute
+      - stacklight-collector
+      - openvswitch
+roles:
+  controller:
+    - etcd
+    - glance-api
+    - glance-registry
+    - heat-api
+    - heat-engine
+    - horizon
+    - keystone
+    - mariadb
+    - memcached
+    - neutron-dhcp-agent
+    - neutron-l3-agent
+    - neutron-metadata-agent
+    - neutron-server
+    - nova-api
+    - nova-conductor
+    - nova-consoleauth
+    - nova-novncproxy
+    - nova-scheduler
+    - rabbitmq
+  compute:
+    - nova-compute
+    - nova-libvirt
+  openvswitch:
+    - neutron-openvswitch-agent
+    - openvswitch-db
+    - openvswitch-vswitchd
+  stacklight-backend:
+    - elasticsearch
+    - grafana
+    - influxdb
+    - kibana
+  stacklight-collector:
+    - heka
+    - stacklight-collector
+    - cron