rename LinkNeighbor to Nexthop (prepare for expansion of nexthop metadata).
rename LinkNeighbor to Nexthop (prepare for expansion of nexthop metadata).

Bairdo/faucet,mwutzke/faucet,REANNZ/faucet,anarkiwi/faucet,byllyfish/faucet,isomer/faucet,faucetsdn/faucet,trungdtbk/faucet,wackerly/faucet,shivarammysore/faucet,gizmoguy/faucet,wackerly/faucet,isomer/faucet,Bairdo/faucet,trentindav/faucet,trentindav/faucet,gizmoguy/faucet,byllyfish/faucet,REANNZ/faucet,shivarammysore/faucet,trungdtbk/faucet,faucetsdn/faucet,anarkiwi/faucet,mwutzke/faucet