Merge "Add MdnsAdvertiser" am: 125ff06cba am: 8c2c1adb63 am: abd263d19b

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2375262

Change-Id: I6327030504fb61318e5894470e367e1d27a744d9
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>