fix: metadata config fixes for ftp listener

Change-Id: I35033c999d1a2386fcac6ecc53ed60e5ca441809

cookbooks/kafka/templates/default/ftp2s3.yaml.erb

@@ -9,6 +9,5 @@
 :output_directory: '<%= @config[:output_directory] %>'
 :split_files:      true
 :s3_bucket:        '<%= @config[:s3_bucket] %>'
-:meta_directory:   '<%= @config[:meta_directory] %>'
-:meta_s3_bucket:   '<%= @config[:meta_s3_bucket] %>'
+:metadata:         <%= @config[:metadata] %>