services/ftp: Tracking issue for Integration Test: Implement Multi-platform Integration Test

[npofsi]

Track integration test implement progress.

Steps

• Basic implement: Integration test with fclairamb/ftpserver on Ubuntu
• Integration test with Filezilla on Windows
• Integration test with vsftpd on Ubuntu

[npofsi]

beyondstorage/go-service-ftp#16 done.

[npofsi]

fclairamb/ftpserver dosen't allow to LIST a file, but standard ftp should.
Since that, There is a commit on list function to solve this case, because some ftp server uses lib fclairamb/ftpserverlib.

[Xuanwo]

fclairamb/ftpserver dosen't allow to LIST a file, but standard ftp should.
Since that, There is a commit on list function to solve this case, because some ftp server uses lib fclairamb/ftpserverlib.

See discussion in beyondstorage/go-service-ftp#16 (comment)