Update FTP Head request to stop downloading the while file
Update FTP Head request to stop downloading the while file

For the moment, the URL given was sent entirely so the file is downloaded for each requests...
It's not the meaning of a HEAD request...

Signed-off-by: Stéphane HULARD <a24f38cb8c57ec2778c80a9f0c151933508927e5@chstudio.fr>

bee4/transport,bee4/transport