Support multicast routing

Added support to apply multicast routing config between network
interfaces in MulticastRoutingCoordinatorService.

Bug: 281217735

Test: atest FrameworksNetTests:android.net.connectivity.com.android.server.connectivity.MulticastRoutingCoordinatorServiceTest

Change-Id: If608b79d4e62a20d2e01755a83a901f6e274d9a2
3 files changed