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

[automerger skipped] Disallow system apps to be installed/updated as instant. am: 2fd2ee45 -s ours am: 3ddaf9bf -s ours am: 7ca4dcca -s ours am: 757e85f7 -s ours

am skip reason: Merged-In Idd89a6dd72f0e68259095f677185f0494391025c with SHA-1 c091f7f5 is already in history

Original change: https://googleplex-android-review.googlesource.com/c/platform/frameworks/base/+/25716267



Change-Id: I1b754a1976ae7b5eaff8e65cfcff074b5e175d22
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>