[BUG] redis.NewStackExchange got radis err: NOAUTH Authentication required.

[bigBron]

I can confirm that the configuration is correct and the same configuration can connect to the cluster using go-redis.
@kataras can you add a go-redis dependency？

Locate where the error occurred：

neffos/stackexchange/redis/stackexchange_redis.go

Lines 106 to 111 in 2221a9a

	cluster, err := radix.NewCluster(cfg.Clusters)
	if err != nil {
	// maybe an
	// ERR This instance has cluster support disabled
	return nil, err
	}

ref: https://github.com/mediocregopher/radix/blob/edd71ccab1b4dadde5b6e422e7af086230c0cf54/cluster.go#L203-L208

[kluevandrew]

Confirm same issue