Update the documentation for lease4-add and lease6-add to include the status field
The descriptions for lease4-add and lease6-add don't specify if the status field can be set as part of creating a lease, although it turns out that the status field can be set quite happily - so this needs to be documented.
(The use case is that in some circumstances, it might be necessary to restore a damaged or lost lease database - in which case it will be necessary to add leases that are in a state other than active.)
The next problem then, is in knowing which value corresponds to which status. It's pretty clear from the code itself, but it's not documented there either.