(#22833) Document file_bucket_file REST interface
Merge branch 'ticket/22833-document-file_bucket_file' of git://github.com/pcarlisle/puppet

# By Patrick Carlisle
# Via Patrick Carlisle
* 'ticket/22833-document-file_bucket_file' of git://github.com/pcarlisle/puppet:
  (#22833) Document file_bucket_file REST interface

Conflicts:
	api/docs/http_api_index.md