Merge "Use network list in UNDERLYING_NETWORKS_CHANGED" am: a6f4de3432

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1536308

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I58184fe4f731319b7bf4c8cf24c0a6571e4a1d8b