upsAdvBatteryChargerStatus floatCharging is not an error

Hi there,

imho there is a small definition error in includes/definitions/mibs/apc/powernet-mib.inc.php:

$config['mibs'][$mib]['states'][$type][4] = [ 'name' => 'floatCharging', 'event' => 'warning' ];

floatCharging should not generate a warning. 'event' => 'ok' is fine.