Merge "Move MdnsTestUtils to the net-tests-utils library" into main am: ac6131b5f1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3132039

Change-Id: I845de421eb40a3a87113eecbdafd9bf369c3d4a3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>