[automerger skipped] libsnapshot_test: skip global setup on non-VAB devices....

[automerger skipped] libsnapshot_test: skip global setup on non-VAB devices. am: b085db74 am: 632b1ab4 -s ours

am skip reason: Change-Id I1382f9a4ddec146fa2d8cfb21ac66ca22a2e110f with SHA-1 a7c00a09 is in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/core/+/12329326

Change-Id: I7f52f8656ed53a8d8ff699267a5e22d81f96965e