[vts-core] Exempt-From-Owner-Approval: Add vts_security_avb_test to vts-core

Add vts_security_avb_test to vts-core suite and test it by using GTest.

Bug: 132702215
Test: $atest vts_security_avb_test
Change-Id: I1138d64610e5d99a2fc24aa44fba983b83a5537b
2 files changed