Added properties to use VHAL for user management. am: 395a426d87 am: efb62930d2 am: f37aea2f1b

Original change: https://googleplex-android-review.googlesource.com/c/platform/system/libsysprop/+/10459023

Change-Id: I8a2c3899c00953f9ea637ee1f5249a71287425a7
tree: 4b267b3f401e304573f7e264b2fe0e7efee09b98
  1. srcs/
  2. OWNERS