[galene] Fix systemd unit

Signed-off-by: Yohann D'ANELLO <ynerant@crans.org>

roles/galene/templates/systemd/system/galene.service.j2

-{{ ansible_header }}
+{{ ansible_header | comment }}
 
 [Unit]
 Description=Galene
@@ -9,7 +9,7 @@ Type=simple
 WorkingDirectory=/var/local/galene
 User=galene
 Group=galene
-ExecStart=/var/local/galene/galene --insecure
+ExecStart=/var/local/galene/galene --insecure --turn ""
 LimitNOFILE=65536
 
 [Install]