Merge "Remove the `at` parameter from send_dg and send_vc" am: 58bb30cc am: 8f020f14

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2486336



Change-Id: I91b6156741f40251eb57f4e168a8e6435664439a
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>