Add a new parameter for Kibana

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

Also added a new repo for Kibana version 5

Change-Id: I3aa1971071d6d63005c3d35add9d9c62230525ec
diff --git a/linux/system/repo/kibana5.yml b/linux/system/repo/kibana5.yml
new file mode 100644
index 0000000..0d6235b
--- /dev/null
+++ b/linux/system/repo/kibana5.yml
@@ -0,0 +1,7 @@
+parameters:
+  linux:
+    system:
+      repo:
+        kibana:
+          source: "deb https://artifacts.elastic.co/packages/5.x/apt stable main"
+          key_url: "https://artifacts.elastic.co/GPG-KEY-elasticsearch"
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