Merge "Modify DnsUtils to use uppercase DNS label conversion" into main am: 53c87fd9a1

Original change: https://android-review.googlesource.com/c/platform/packages/modules/Connectivity/+/3181960

Change-Id: I26029f78b5323c426f302d58dd4ffb715a1edec6
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>