Merge "Replace useTls with mode in PrivateDnsConfig" into main am: 452feb2620 am: 73f98a3fa1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/2842798

Change-Id: I732d1f9eebfa6590c94fbe847b61c2c40b292733
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>