[API] Adds cause parameter to indices.put_template

Author: picandocodigo

elasticsearch-api/lib/elasticsearch/api/actions/indices/put_template.rb

@@ -27,6 +27,7 @@ module Actions
         # @option arguments [String] :name The name of the template
         # @option arguments [Number] :order The order for this template when merging multiple matching ones (higher numbers are merged later, overriding the lower numbers)
         # @option arguments [Boolean] :create Whether the index template should only be added if new or can also replace an existing one
+        # @option arguments [String] :cause User defined reason for creating/updating the index template
         # @option arguments [Time] :master_timeout Specify timeout for connection to master
         # @option arguments [Hash] :headers Custom HTTP headers
         # @option arguments [Hash] :body The template definition (*Required*)