[BOT.5] Move class Ipv6ForwardingRule from IpServer to the coordinator

This is a preparation for moving adding/removing forwarding rules from
IpServer to BpfCoordinator.

Bug: 150736748
Test: atest IpServerTest
Change-Id: I85316ef09ff3c9389ded11dcc384493d699da48e
2 files changed
tree: 9a4c73d4e7288b77d6b9f92c6c4077a5af04c262
  1. Tethering/