Fix PHP filter.default setting in FPM environments

templates/php_pool.conf

@@ -38,7 +38,7 @@ php_admin_value[display_errors] = {{ php_display_errors }}
 php_admin_value[display_startup_errors] = {{ php_display_startup_errors }}
 php_admin_value[error_reporting] = {{ php_error_reporting }}
 php_admin_value[expose_php] = {{ php_expose_php }}
-php_admin_value[filter_default] = {{ php_filter_default }}
+php_admin_value[filter.default] = {{ php_filter_default }}
 php_admin_value[html_errors] = {{ php_html_errors }}
 php_admin_value[log_errors] = {{ php_log_errors }}
 php_admin_value[magic_quotes_gpc] = {{ php_magic_quotes_gpc }}