HH-40337 switch to netty 4.0.x
HH-40337 don't leak bytebuf in serializer
HH-40337 use MoreExecutors.listeningDecorator(...) instead
HH-40377 better TcpOptions
HH-40377 reformat code and optimize imports
Merge remote-tracking branch 'origin/HH-40337' into release-candidate
[maven-release-plugin] prepare release http-rpc-1.17