Merge "Add test construct for RtNetlinkLinkMessage" into main am: edebb957eb am: 0207f70259

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3153556

Change-Id: I16b64f234591e9d9083c7056d1f2bd090e86e1dd
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>