New exception: OpenSSL exception to LGPL 2.0 or later

[DennisClark]

Please add this Exception to the ScanCode license list.
Suggested key: openssl-exception-lgpl-2.0-plus
Suggested name: OpenSSL exception to LGPL 2.0 or later

See https://github.com/GNOME/glib-networking/blob/2.57.2/LICENSE_EXCEPTION

		LICENSE EXCEPTION FOR OPENSSL

 * In addition, as a special exception, the copyright holders give
 * permission to link the code of portions of this program with the
 * OpenSSL library, and distribute linked combinations
 * including the two.
 * You must obey the GNU Library General Public License in all respects
 * for all of the code used other than OpenSSL.  If you modify
 * file(s) with this exception, you may extend this exception to your
 * version of the file(s), but you are not obligated to do so.  If you
 * do not wish to do so, delete this exception statement from your
 * version.  If you delete this exception statement from all source
 * files in the program, then also delete it here.

[pombredanne]

This has been added with #1245
Thank you!