Don't provide Build.Serial to apps targeting v2 sandbox

Bug: 35882064
Test: cts-tradefed run commandAndExit cts-dev -m
CtsAppSecurityHostTestCases -t
android.appsecurity.cts.EphemeralTest#testBuildSerialUnknown

Change-Id: I66360a2efe5b0df7935a74f22096a2b54e122300
1 file changed