Merge "Replace useTls with mode in PrivateDnsConfig" into main am: 452feb2620 am: 202ea17a51

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

Change-Id: I55f1c56e73e64a6af1b1cf91c87ab17b411668a4
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>