Merge "Add MdnsAdvertiser" am: 125ff06cba

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

Change-Id: I6f65593ead1dc22ce56204e9414249a8745b3de2
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>