IMPORTANT: The known issue is that in case of configured UpstreamRPCServer transactions are sent immediately not waiting for CompleteTransaction or DiscardTransaction which brings inconsistency in behaviour and acts as a security breach.
* new UpstreamRPConfig in geth/params to provide upstream configuration
* conditional start of ethereum blockchain sequence based on NodeConfig.UpstreamConfig.Enabled flag state
Added a lightweight logger wrapper around go-ethereum/log which adds StatusIM prefix to all messages and allows to clearly distinguish between status-go and go-ethereum logs.
Logs under vendor/go-ethereum left unchanged because those pieces of code might undergo huge refactoring in the near term.