Fixed socket creation timeouts

With poll-timeout >  new-socket-timeout :  In ZeroMQExtension if a socket creation is attempted before the initialization of the PUB/SUB sockets used to send interrupts, the SocketManager poller.poll (line59) will block the Actor thread and prevent any socket creation (NewSocket). 

Due to the fact that actorOf[SocketManager] is async, Tests were randomly passing since SocketManager was receiving NewSocket before its Poll message sent at initialization.