Error message from FTP server should log if a target file cannot be created

Current Situation

• The following error occurs if a target file cannot be created, e.g. if the data channel is closed:

  com.sos.JSHelper.Exceptions.JobSchedulerException: SOSVfs_E_176: SOSVfsFtpFile::write failed, can not get OutputStream for file /my/target/testfile
      at com.sos.VirtualFileSystem.FTP.SOSVfsFtpFile.write(SOSVfsFtpFile.java:588)
      at com.sos.VirtualFileSystem.DataElements.SOSFileListEntry.doTransfer(SOSFileListEntry.java:312)
      at com.sos.VirtualFileSystem.DataElements.SOSFileListEntry.run(SOSFileListEntry.java:963)
      at com.sos.DataExchange.SOSDataExchangeEngine.sendFiles(SOSDataExchangeEngine.java:738)
      at com.sos.DataExchange.SOSDataExchangeEngine.transfer(SOSDataExchangeEngine.java:920)
      at com.sos.DataExchange.SOSDataExchangeEngine.Execute(SOSDataExchangeEngine.java:292)
      at com.sos.DataExchange.SOSDataExchangeEngineMain.Execute(SOSDataExchangeEngineMain.java:110)
      at com.sos.DataExchange.SOSDataExchangeEngineMain.main(SOSDataExchangeEngineMain.java:63)
  

Desired Behavior

• The orignal error message as provided by the FTP server should be logged in addition to the JADE internal log info (e.g. 425 Failed to establish connection).