Update couchdb revision

Change-Id: I99c73df5d0248039d6e8d56be112e6459845da8b
Reviewed-on: http://review.couchbase.org/24097
Reviewed-by: Filipe David Borba Manana <fdmanana@gmail.com>
Tested-by: Filipe David Borba Manana <fdmanana@gmail.com>