Skip GKI 2.0 test for devices launched before S

GKI 2.0 should be exempted for devices launched before S, according
to the information in the following link:

https://source.android.com/devices/architecture/kernel/generic-kernel-image#gki2_0-products

Bug: 227647259
Test: atest vts_security_avb_test
Test: atest vts_gki_compliance_test
Change-Id: I1105295f36c232e6636772dc29b7e15b71e97666
4 files changed