kanboard: Fix email settings

Signed-off-by: Florian Pritz <bluewind@xinu.at>

roles/kanboard/templates/config.php.j2

@@ -8,3 +8,8 @@ define('DB_NAME', '{{kanboard_db}}');
 
 define('ENABLE_HSTS', false);
 define('ENABLE_URL_REWRITE', true);
+
+define('MAIL_TRANSPORT', 'smtp');
+define('MAIL_SMTP_HOSTNAME', 'localhost');
+define('MAIL_SMTP_PORT', 25);
+define('MAIL_FROM', 'kanboard@archlinux.org');