Auth cleanup
Auth cleanup

Change-Id: Idf690f5766b8de0ed014cbedc1098123cb4271e2
Reviewed-on: http://review.couchbase.org/59330
Reviewed-by: Steve Yen <ef850f73f7832052d3c6d9b5ddd3a1716d9a57f1@gmail.com>
Tested-by: Nimish Gupta <74f34836c7a1542f5a2a30c0a3c1258c7625e782@couchbase.com>

couchbase/go-couchbase