p2p/simulations: fix data race on swarm/network/simulations#18464

Merged

nonsense merged 3 commits intoethereum:masterfrom ethersphere:netsim-race

Jan 22, 2019

+15-4

Commits on Jan 16, 2019

swarm/network: fix data race on TestService bucket caused by copying struct content without synchronisation
acud
committed

Commits on Jan 18, 2019

p2p/simulations: changed NewEvent function to be used under network lock to avoid possible data race
acud
committed
p2p/simulations: address data race pr comments
acud
committed