Do not use /tmp as the session path as it won't be collected by PHP session_clean

templates/php_pool.conf

@@ -27,7 +27,6 @@ env[TEMP] = /tmp
 ; PHP settings
 php_admin_value[doc_root] = /var/www{{apache_server_default_root|default('')}}
 php_admin_value[upload_tmp_dir] = /tmp
-php_admin_value[session.save_path] = "/tmp"
 php_admin_value[browscap] = {{ php_browscap }}
 php_admin_value[conf_dir] = {{ php_conf_dir }}
 php_admin_value[date_timezone] = {{ php_date_timezone }}