[automerger skipped] Disallow system apps to be installed/updated as instant....

[automerger skipped] Disallow system apps to be installed/updated as instant. am: 3fb2504a -s ours am: 11be884c -s ours

am skip reason: Merged-In Idd89a6dd72f0e68259095f677185f0494391025c with SHA-1 c61ee9f4 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/25715851



Change-Id: I37d740e7ee2cd7e63fd7fbdcf77519727f81d15d
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>