JET BGP API: BGP flowspec

This feature extends the BGP Route Reflector programmability APIs to support flowspec address family. Controllers can use this new address family in the API to install the flowspec routes. The programmed flowspec routes are added to the flow-spec route table similar to static flowspec routes. BGP then advertises these routes to other BGP peers using the flowspec address family. This new functionality augments other available address families and is backward compatible. This feature introduces support for the following match conditions for flowspec routes: o Destination prefix o Source prefix o Protocol (not supported for IPv6) o Ports This feature introduces support for the following actions for flowspec routes: o discard o mark dscp o rate limit o redirect to VRF o sample