Merge "TestNetworkService: add support to disable DAD on test interfaces" am: e6162aca71

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2151982

Change-Id: Iabe954dcd8dc401170e8ad80ecaf3725fda6050c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>