Merge "[VCN07.6] Add NOT_VCN_MANAGED for NetworkAgent implementations" am: ac0dbac04c am: 31522e92b4

Original change: https://android-review.googlesource.com/c/platform/frameworks/base/+/1562877

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: I9254d74b8cbc28d652a88f35ead8007cc0336bf1