ecore_con: fix ftp upload function to follow documentation.

ecore_con: fix ftp upload function to follow documentation.

Summary:
While creating a Ecore_con_url object, the url is given in this format "ftp://ftp.example.com". While uploading a file, this function was prefixing "ftp://" to this url which resulted in DNS failure, and upload fail. So corrected the issue.

Signed-off-by: Srivardhan Hebbar <sri.hebbar@samsung.com>
Reviewers: cedric

Reviewed By: cedric

Subscribers: cedric

Differential Revision: https://phab.enlightenment.org/D2221

Signed-off-by: Cedric BAIL <cedric@osg.samsung.com>