Exchanges: Add config variable to set bypassing of orderbook verification by exchange (#614)

* Exchanges: Add config variable to set bypassing of orderbook verification

* Exchanges: Consolidate orderbook variables into config struct

* Exchanges: Addr nit; set verification bypass on websocket book implementations

exchanges/exchange.go

@@ -590,6 +590,7 @@ func (e *Base) SetupDefaults(exch *config.ExchangeConfig) error {
 		return err
 	}
 	e.BaseCurrencies = exch.BaseCurrencies
+	e.OrderbookVerificationBypass = exch.OrderbookConfig.VerificationBypass
 	return nil
 }