Merge "[VCN06] Support request background network" am: 7e0d8315d1 am: 5fa77ae82c

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1553866

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I8c41f6e2eda3b0b690cf6715c58f3bb98de8b1c1