Floss: Suspend Topshim Test

6 seconds is a REALLY long time.
The default has been modified to 2.

Should be overridden for scanning possibly, but everything else should
happen within 2 seconds.

Additionally, the suspend timeout is 2 seconds so we need to be done
within 2 seconds of calling le_rand.

Bug: 229264266
Test: mma -j $(nproc)
Test: ./build.py
Test: system/gd/cert/run_topshim
Tag: #floss
Change-Id: I39da69403589c25b6de8745aae3effbe20c1df53