Add AccountingRule in and out
AccountingRule max is often used for services that actually only charge for bandwidth out, such as AWS.
There may also be services that only charge for bandwidth in, although it seems somewhat unlikely. However, it should be included for completeness.
AccountingRule max and
AccountingRule sum implementation assumes that an increase in outgoing bandwidth always increases the amount being measured. Therefore, it disabes the
AccountingMax is in effect.
It might make sense to only do this for AccountingRules max, sum, and out; and not for AccountingRule in.