Function sync

test/replication.test.js:1561–1570

(client, server)

      }

      function sync(client, server) {
        return function syncBothWays(next) {
          async.series([
            // NOTE(bajtos) It's important to replicate from the client to the
            // server first, so that we can resolve any conflicts at the client
            replicateExpectingSuccess(client, server),
            replicateExpectingSuccess(server, client),
          ], next);
        };
      }
    });

    function updateSourceInstanceNameTo(value) {