minor #352 elasticsearch configuration example (cmygeHm)

This PR was merged into the 3.x-dev branch.

Discussion
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elasticsearch configuration example

Add user, password and transport for elasticsearch configuration example.

Commits
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999bb83 elasticsearch configuration example

Author: jderusse

DependencyInjection/Configuration.php

@@ -85,6 +85,9 @@
  *      - id: optional if host is given
  *      - host: elastic search host name. Do not prepend with http(s)://
  *      - [port]: defaults to 9200
+ *      - [transport]: transport protocol (http by default)
+ *      - [user]: elastic search user name
+ *      - [password]: elastic search user password
  *   - [index]: index name, defaults to monolog
  *   - [document_type]: document_type, defaults to logs
  *   - [level]: level name or int value, defaults to DEBUG