Allow background networking for test uids am: b7574d4e am: 2888e32e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2966043



Change-Id: I108760248469e411877c7c32e11a2e1611906168
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>