Merge "Delete custom test_config used by doh_unit_test" am: dc770b42 am: f5dbc91d

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2136752



Change-Id: Ibe0e62fe82b26ba389c350978c68a28555113b9e
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>