cmd/swarm/swarm-smoke: improve smoke tests (#1337)
swarm/network: remove dead code (#1339)
swarm/network: remove FetchStore and SyncChunkStore in favor of NetStore (#1342)
This commit adds all changes needed for the merge of swarm-network-rewrite.
The changes:
- build: increase linter timeout
- contracts/ens: export ensNode
- log: add Output method and enable fractional seconds in format
- metrics: relax test timeout
- p2p: reduced some log levels, updates to simulation packages
- rpc: increased maxClientSubscriptionBuffer to 20000