Allow verbosity in websocket testing

[gloriousCode]

I have to hardcode verbose: true inside stream.NewWebsocket()/websocket.NewManager() because the only way to have a verbose websocket is for the exchange to be verbose. When testing a websocket, the normal path testcode follows is using /testing/exchange/Setup which overrides any local verbosity settings. If you then manually set the exchange to have verbosity, it is too late, the websocket has been setup and you can't set Verbose to true. This makes me sad.

With Shazbert and gk actively changing the websocket, I figure I raise an issue rather than implement it and cause untold rebase issues for them. I hope they will sneak such a change in to suit me. Thanks