Add elastic search commented out

Author: gmr

etc/newrelic/newrelic_plugin_agent.cfg

@@ -26,6 +26,12 @@ Application:
   #  account: YOUR_ACCOUNT_#
   #  token: YOUR_API_TOKEN
 
+  #elasticsearch:
+  #  name: Clustername
+  #  host: localhost
+  #  port: 9200
+  #  scheme: http
+
   #haproxy:
   #  name: hostname
   #  scheme: http