Add a test config template for doh_ffi_test am: cdc6d3bb am: a9bb2540 am: f364d8bb

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2306303



Change-Id: I677d9bb172997e79e0adca339e896572621e37e3
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>