Update couchdb revision

Change-Id: I604cbd07b61140fa145cbca825d81a8e32f65d80
Reviewed-on: http://review.couchbase.org/24101
Reviewed-by: Filipe David Borba Manana <fdmanana@gmail.com>
Tested-by: Filipe David Borba Manana <fdmanana@gmail.com>