Merge "Also mount /sys/fs/selinux" am: d9154a7aa2 am: dd042a2af9 am: f661d44e4f

Original change: https://android-review.googlesource.com/c/platform/frameworks/native/+/2628122

Change-Id: I53032e36db1b8776727e59fbf5407c7159ff153f
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>