handle ft_send_local_ips option with jingle FT

src/common/jingle_transport.py

@@ -168,6 +168,9 @@ class JingleTransportSocks5(JingleTransport):
                 self.candidates.append(cand)
 
     def _add_local_ips_as_candidates(self):
+        if not gajim.config.get_per('accounts', self.connection.name,
+        'ft_send_local_ips'):
+            return
         if not self.connection:
             return
         local_ip_cand = []