Switch FakeDns from List<String> to String[]. am: 5b60f8b30e

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/3261833

Change-Id: I831f876edb0e6e303d6babcb0515bc1e1777594c
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>