[llvm] [utils][tests] Adjust timeout-hang.py tolerances (PR #142089)

[David Spickett via llvm-commits]

DavidSpickett wrote:

> This appears to be an environment issue potentially connected to high load because the problem is not observed on other AIX machines.

My experience has been that this is the case. We had a lot of problems with the GoogleTest timeout test, though they have calmed down recently. lit would be told to apply a timeout of N seconds, but not get CPU time for N+1 seconds so it couldn't cancel it until it was too late.

https://github.com/llvm/llvm-project/pull/142089