Title: Log debug/info/whatever message when FractionalPercent.numerator greater than FractionalPercent.denominator
Description: When using FractionalPercent with RouteMatch it is possible to mess up with values on denominator / numerator so the underlying condition

(random_value % denominator) < numerator

Will be always evaluated to true because of numerator exceeds denominator. It becomes hard to debug why configuration does not work (no logs, just shows that clusterN has been selected).

Do you guys think it is make sense to add some kind of logging to simplify configuration debuggability?
If so I can add this.

Thanks