Shim stack facade test and fix for test

Accidently 'captured' a raw pointer into a unique
pointer, which forced deletion upon destruction
resulting in other modules who rely on the no-longer-
in-existance module to call the module's pure
virtual Stop() function which is a bad thing.

Bug: 140778599
Test: ./gd/cert/run_cert_facade_only.sh

Change-Id: Ie1e39430517e47497172786fe4d8ab4976c371b4