Closes-Bug: #1380904. Treat Vlan tagged IP packets from VM as L2 packets. L3 well know packets and ARP packets are not processed any more in L3 block and are subjected to L2 looksup so that they are L2 bridged

Change-Id: Ie3e976d6f1a27b2be585096404d626714694bedd
Merge "Closes-Bug: #1380904. Treat Vlan tagged IP packets from VM as L2 packets. L3 well know packets and ARP packets are not processed any more in L3 block and are subjected to L2 looksup so that they are L2 bridged" into R1.30