post https://example.com/Policy/SetPlinksv2
Replacement for SetPlinks, with added code to detect and prevent situations where the action of saving
the plinks file overwrites changes that have been made by another mechanism. The Plinks parameter is
identical to the payload of the SetPlinks API, the RevStamp parameter is new. If the plinks file has
been changed since the RevStamp was originally issued then API will return a failure.