Enable lockUserTest

Code such that after lockUserTest is run, we assert that the keyguard
was successfully dismissed so that the device can return to it's pretest
state. All tests run in <5s now.

Test: atest TrustTests --iterations
Bug: 221155933
Change-Id: I20bf7671f8deeb6c70a977e7c2fc7cbc5395fe4b
3 files changed