Add app's own UID to the default ACL. am: 1129b81071 am: 55565a991f am: c5ce51cc7c

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/vold/+/11871333

Change-Id: I46b39a146dac754e8346b3fd3f03c4d7a7ec0be3