[FEATURE] Add close_timeout to filebeat config (#91)

* [FEATURE] Add close_timeout to filebeat config

config/templates/etc/filebeat/filebeat.yml.j2

@@ -71,6 +71,13 @@ filebeat.inputs:
   # Note: After is the equivalent to previous and before is the equivalent to to next in Logstash
   #multiline.match: after
 
+{% if beats_config.filebeat.close_timeout is defined %}
+  # Close timeout closes the harvester after the predefined time.
+  # This is independent if the harvester did finish reading the file or not.
+  # By default this option is disabled.
+  # Note: Potential data loss. Make sure to read and understand the docs for this option.
+  close_timeout: {{ beats_config.filebeat.close_timeout }}
+{% endif %}
 
 #============================= Filebeat modules ===============================