Merge "Revert "Revert "libprocessgroup: Add support for SetUserProfiles""" am: b083eb3611

Original change: https://android-review.googlesource.com/c/platform/system/core/+/2536792

Change-Id: If607369fa202da74d5e646e587a1bb6325013de7
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>