FTPImportService does not see content of direcotry

[rsoika]

In some cases of FTP Servers the FTPImportService is unable to open the files contained in a directory.

The method call of ftpClient.listFiles(path); is not recommended:

... Since the server may or may not expand glob expressions, using them here is not recommended and may well cause this method to fail. Also, some servers treat a leading '-' as being an option. To avoid this interpretation, use an absolute pathname or prefix the pathname with ./ (unix style servers). Some servers may support "--" as meaning end of options, in which case "-- -xyz" should work.

[rsoika]

verified