Merge "[VCN06] Support request background network" am: a18490bdde am: 1856a60c7b

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1545847

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: Ic810d591fcb5895db877fdd5634f9adca6a7720f