Increase timeout for the 570-checker-osr test from 20s to 60s.

We have added new tests to the 570-checker-osr test in
    https://android-review.googlesource.com/215877
without increasing the timeout and we're seeing a timeout
on the build bot but not locally.

Bug: 28210356
Change-Id: I52160e617772857c62c7cbb7de6cbb5c23c02a66