017223acda
* changes: Require the new PACKET_KEEPALIVE_OFFLOAD permission. Add an error code for generic hardware error. Fix bugs and crashes in PacketKeepalive API. Add tests for the PacketKeepalive API. Add a PACKET_KEEPALIVE_OFFLOAD permission. Use a CountDownLatch instead of sleep() in NetworkFactory tests. Get rid of shortSleep() in ConnectivityServiceTest. Make ConnectivityServiceTest a bit more readable.