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

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

MUST ONLY BE SUBMITTED BY AUTOMERGER

Change-Id: If92b70b62029571082bba8e823d115cee2860a8d