add settings to customize webserver logs

Signed-off-by: Michael Kaufmann <michael.kaufmann@aixit.com>

install/froxlor.sql

@@ -656,6 +656,9 @@ opcache.interned_strings_buffer'),
 	('system', 'nssextrausers', '0'),
 	('system', 'disable_le_selfcheck', '0'),
 	('system', 'ssl_protocols', 'TLSv1,TLSv1.2'),
+	('system', 'logfiles_format', ''),
+	('system', 'logfiles_type', '1'),
+	('system', 'logfiles_piped', '0'),
 	('panel', 'decimal_places', '4'),
 	('panel', 'adminmail', 'admin@SERVERNAME'),
 	('panel', 'phpmyadmin_url', ''),