Merge changes from topic "networkagent-set-underlying-networks" am: dccf7eda5e am: b428266cd1 am: d2e2a4a639

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1501816

Change-Id: I6a96b80ab6d94e0cfe4b202ec5aa4a3096c2f090
tree: 03a5b0c62a3766d163940dee9ccdb132a9183b21
  1. core/
  2. services/
  3. tests/