Merge "Allow appdomain sepolicy search access to /mnt/media_rw" am: a62ecbdf51 am: 22e8e5cc88 am: 6caaac5e73

Original change: https://android-review.googlesource.com/c/platform/system/sepolicy/+/1669925

Change-Id: I7de42dee4aa5e2da07f0ff3a82b2a0002b10b2b3