In crbug.com/823528 we saw autotest case to hang. The issue itself is tracked in the other thread, but another problem is that it took more than one hour to abort the test, unnecessarily blocking CQ.

For tests that typically finish in minutes, we don't need to wait for hours.

I gathered test duration in labs with 50/90/95%iles and max:
https://goto.google.com/zbiov

It might be good idea to set timeouts according to these numbers.