tree 843cdaade8071b4dc26b1568354a328e1d4fef9a
parent c3a4fe97e0672dc1641a27c145be234a3dc0c511
author Hai Zhang <zhanghai@google.com> 1548803137 -0800
committer Hai Zhang <zhanghai@google.com> 1548809637 -0800

Add systemOnly attribute for role.

Roles such as the emergency role requires a system app, so add an
attribute for it. Also made the emergency role system-only.

Bug: 110557011
Bug: 123293861
Test: manual
Change-Id: I4d4951b363317b01a11e646808f2f0cd695b9644