Created by: tebriel
Overrides the options.redis settings for clientName for creating a new client
When specifying createClient as part of the Bull.QueueOptions there is no way to know the Queue's name (from queue.clientName).
When calling queue.process, this.setHandler is invoked which calls setWorkerName however this only does so on the client, and not on the eclient (subscriber) nor on the bclient.
I opted to hand the clientName via connectionName in the redis options (overriding the defaults passed in to the QueueOptions to allow the createClient function to determine what to do with these options.
Additionally I slightly tweaked the example to note that this value is present and to better showcase how to use the createClient function.