Switch Elasticsearch and Kibana to 5 version

Change-Id: I0e7fe750b177acfdbed0e69efe7c901a328a31ca
diff --git a/elasticsearch/server/single.yml b/elasticsearch/server/single.yml
index ce7da36..419513d 100644
--- a/elasticsearch/server/single.yml
+++ b/elasticsearch/server/single.yml
@@ -3,7 +3,7 @@
 - service.elasticsearch.server.single
 parameters:
   _param:
-    elasticsearch_version: 2
+    elasticsearch_version: 5
   linux:
     system:
       sysctl: