Exclude verity relative test cases in cts-reference-aosp

We need to disable verity to test CTS with GSI, so we should not
test verity whatever enabled.

Bug: 64240910
Test: cts run cts-reference-aosp -m CtsKeystoreTestCases -t com.android.keystore.cts.KeyAttestationTest#testEcAttestation
Test: cts run cts-reference-aosp -m CtsKeystoreTestCases -t com.android.keystore.cts.KeyAttestationTest#testRsaAttestation
Change-Id: I48dba51fd790f883e1c93cc1ac8c95170df8b2f5
1 file changed