Avoid peerUpdate logic in swarm mode
Avoid peerUpdate logic in swarm mode

Signed-off-by: Flavio Crisciani <59eae1aa696b1b39cd87a38bdba3f0b2630647f9@docker.com>

vdemeester/libnetwork,mahak/libnetwork,vdemeester/libnetwork,abhi/libnetwork,ityangchen/libnetwork,mahak/libnetwork,abhi/libnetwork,docker/libnetwork,fcrisciani/libnetwork,kolyshkin/libnetwork,kolyshkin/libnetwork,medallia/libnetwork,abhi/libnetwork,allencloud/libnetwork,docker/libnetwork,medallia/libnetwork,fcrisciani/libnetwork,vdemeester/libnetwork,kolyshkin/libnetwork,docker/libnetwork,ityangchen/libnetwork,mahak/libnetwork,medallia/libnetwork,allencloud/libnetwork