Fix race in CircuitBreakerMTSpec, see #2823
remove fixed ports from RemoteCommunicationSpec, see #2843
remove fixed ports from AkkaProtocolStressTest, see #2843
remove fixed ports from ThrottlerTransportAdapterSpec, see #2843
Hardened flushing by sending a final "null" message
Merge pull request #990 from drewhk/wip-hardened-flushing-drewhk

Hardened flushing by sending a final "null" message
Cleaned up chaining of ChannelGroupFutures
remove fixed ports from RemotingSpec, see #2843
remove postfixOps warnings in remote tests
Added setIssueHandshake() to enable auto-handshake
Using named parameters for booleans
introduce AkkaSpec.beforeTermination hook, e.g. to silence shutdown logs

- apply it in RemoteRouterSpec, RemoteDeathWatchSpec, RemotingSpec,
  AkkaProtocolStressTest and ThrottlerTransportAdapterSpec
rename AkkaSpec.{atTermination => afterTermination}
Merge pull request #992 from akka/wip-2843-port-zero-∂π

ticket 2843: make all ports dynamic in remoting tests
Merge pull request #989 from akka/wip-2823-CircuitBreakerMTSpec-patriknw

Fix race in CircuitBreakerMTSpec, see #2823
Merge pull request #991 from drewhk/wip-updated-nettyfuturebridge-drewhk

Cleaned up chaining of ChannelGroupFutures
Merge pull request #994 from drewhk/wip-2833-ssl-remoing-failed-drewhk

Added setIssueHandshake() to enable auto-handshake #2388