Add "manager" scope into privet API

BUG=25049439

Change-Id: Ide930d204ebf243c0aa9df3820959f5dfdb0e1d1
Reviewed-on: https://weave-review.googlesource.com/1966
Reviewed-by: Vitaly Buka <vitalybuka@google.com>
Reviewed-by: Alex Vakulenko <avakulenko@google.com>
6 files changed