This imports and exports BGPsec router key data, and exports router
key data out over RTR to supporting clients (any version higher than 1)
Since it's obvious that at some point there will be clients that will
have issues seeing a RouterKey PDU for the first time ever, I've
included a -disable.bgpsec flag to prevent them from being sent.
That way if someone is caught off guard during an upgrade, they can
disable it and keep upgrading.
Tag: https://github.com/bgp/stayrtr/issues/57
First, VRPs that have expiry times are now checked, and they are
filtered out at import time.
Second, If a VRP JSON file is too old, and the "current state"
(in the case of a update) is too old, the state will empty to avoid
routing on old data.
Third, Every time a refresh cycle now happens, the file is reprocessed
to check for expiry, if the resulting VRPs from that procesing changes
then a new update+serial is pushed
Tag: https://github.com/bgp/stayrtr/issues/15
