Drop support for "all" from management.metrics.distribution.sla #14678
Description
All can apply to different types of meters, some which require a Duration and some which require a long. This means that a value like 30s will be converted to a Duration. If the meter requires a long, they'll end up with the nanos value of the duration. This doesn't make much sense. We should drop support for all so that the value for individual property doesn't have to deal with two different types.