cc87c1b1b0
When RSocket client connects to the server there is no reason to wrap a `ConnectionSetupPayload` into a `Message` since we are not going to send it downstream * Refactor `IntegrationRSocket.handleConnectionSetupPayload()` just return a `Mono<DataBuffer>` for converted `ConnectionSetupPayload` * Ask for a `destination` and `RSocketRequester` from the `IntegrationRSocket` instead of message headers