Add a possibility to deploy Elasticsearch 5.x version

Elasticsearch 2.x version is deployed by default

Change-Id: I78e714807cf5925a9619961ab145f27ef0210652
diff --git a/metadata/service/server/local.yml b/metadata/service/server/local.yml
index 259f468..24f577e 100644
--- a/metadata/service/server/local.yml
+++ b/metadata/service/server/local.yml
@@ -3,9 +3,12 @@
 classes:
 - service.elasticsearch.support
 parameters:
+  _param:
+    elasticsearch_version: 2
   elasticsearch:
     server:
       enabled: true
+      version: ${_param:elasticsearch_version}
       bind:
         address: 127.0.0.1
         port: 9200