Switch Elasticsearch and Kibana classes to 5 version

Change-Id: I928a6a9e0e4c3a4eef208989eadd856351b2ee61
diff --git a/classes/cluster/sl-k8s-contrail/stacklight/server.yml b/classes/cluster/sl-k8s-contrail/stacklight/server.yml
index bb10d07..5464309 100644
--- a/classes/cluster/sl-k8s-contrail/stacklight/server.yml
+++ b/classes/cluster/sl-k8s-contrail/stacklight/server.yml
@@ -1,7 +1,7 @@
 classes:
 - system.linux.system.repo.influxdb
-- system.linux.system.repo.elasticsearch
-- system.linux.system.repo.kibana
+- system.linux.system.repo.elasticsearch.5
+- system.linux.system.repo.kibana.5
 - system.linux.system.repo.docker
 # Needed to install Galera packages
 - system.linux.system.repo.mcp.openstack