Merge "Treat Microdroid as OS with monolithic sepolicy" am: 121e3b8320

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2617775

Change-Id: Ic92490103ef484154ebdebe3d3d1cd4636388a13
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>