Fix installation scripts for StackLight

The change ensures that log_collector and remote_collector are
installed. It also removes unnecessary steps and moves the installation
of StackLight at the end of the workflow to make sure that all the
monitored services are deployed.

It also uses the Docker images from the Mirantis internal registry.

Change-Id: Id53507856098d0282f8b90e5d9aca5a362e97de7
diff --git a/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml b/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
index 4ccdb19..c455526 100644
--- a/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
+++ b/classes/cluster/virtual-mcp11-dvr/stacklight/server.yml
@@ -48,12 +48,12 @@
     grafana_database_type: mysql
     grafana_database_host: ${_param:openstack_database_address}
     grafana_database_password: ${_param:mysql_grafana_password}
-    docker_image_alertmanager: mirantis/alertmanager:latest
-    docker_image_pushgateway: mirantis/pushgateway:latest
-    docker_image_prometheus: mirantis/prometheus:latest
-    docker_image_remote_agent: mirantis/telegraf:latest
-    docker_image_remote_collector: mirantis/heka:latest
-    docker_image_remote_storage_adapter: mirantis/remote_storage_adapter:latest
+    docker_image_alertmanager: docker-prod-virtual.docker.mirantis.net/openstack-docker/alertmanager:latest
+    docker_image_pushgateway: docker-prod-virtual.docker.mirantis.net/openstack-docker/pushgateway:latest
+    docker_image_prometheus: docker-prod-virtual.docker.mirantis.net/openstack-docker/prometheus:latest
+    docker_image_remote_agent: docker-prod-virtual.docker.mirantis.net/openstack-docker/telegraf:latest
+    docker_image_remote_storage_adapter: docker-prod-virtual.docker.mirantis.net/openstack-docker/remote_storage_adapter:latest
+    docker_image_remote_collector: docker-prod-virtual.docker.mirantis.net/openstack-docker/heka:latest
     docker_image_grafana: grafana/grafana:4.3.2
     prometheus_glusterfs_service_host: ${_param:openstack_control_address}
     glusterfs_node01_address: ${_param:openstack_control_node01_address}