testInfo on running/queued tests

I noticed that webpagetest.org has a special testInfo property. Show in this link: jsonResult.php

How do I turn this feature on for my private instance? When we run tests, it’s missing testinfo… looking like this

{ data: { statusCode: 101, statusText: "Waiting at the front of the queue...", id: "140719_TP_32", testId: "140719_TP_32", runs: 10, fvonly: 1, remote: false, testsExpected: 10, location: "ec2-us-east-IE9-005_wptdriver", behindCount: 0 }, statusCode: 101, statusText: "Waiting at the front of the queue..." }

That’s bleeding-edge coming in 2.15 (probably this week because it fixes some Chrome 36 issues).