Add a new parameter for Elasticsearch

Added a new parameter version to specify
which version of Elasticsearch should be deployed.

Also added a new repo for Elasticsearch ver. 5

Change-Id: Ifa2a0763ccc515f58173f42cba206da2cc55f3ba
diff --git a/releasenotes/notes/elasticsearch-new-parameter-93a08f64ff1a22ab.yaml b/releasenotes/notes/elasticsearch-new-parameter-93a08f64ff1a22ab.yaml
new file mode 100644
index 0000000..00a44b2
--- /dev/null
+++ b/releasenotes/notes/elasticsearch-new-parameter-93a08f64ff1a22ab.yaml
@@ -0,0 +1,11 @@
+---
+summary: >
+    Added a new parameter for Elasticsearch
+features:
+  - Added the ``elasticsearch_version`` parameter to specify
+    which version of Elasticsearch should be deployed.
+    Elasticsearch version 2 is deployed by default.
+    To deploy Elasticsearch version 5, specify the
+    ``elasticsearch_version: 5`` parameter in the
+    ``classes/cluster/<cluster_name>/stacklight/server.yml``
+    file of the Reclass model.