Merge "Modify DnsUtils to use uppercase DNS label conversion" into main am: 53c87fd9a1 am: ce0b6d5264

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

Change-Id: I3787b2fd89f55ad83c9409a65b95b87e34700933
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>