Merge "Add AIDL for registering ConnectivityDiagnosticCallbacks." am: 8f1c6d2bfd am: a358c3c92b

Change-Id: Iaa36b7036d916ef7a48314a3dfa224750e720c62
tree: fdc1aa9fee7c7260bea9cb92672bb5471268ecc3
  1. core/
  2. services/
  3. tests/