Merge "Revert "Remove FakeDns from NetworkStack tests."" into main am: c8d4e0c92c

Original change: https://android-review.googlesource.com/c/platform/packages/modules/NetworkStack/+/3272374

Change-Id: I9ebd0402be38295906aeae0fca23aa3f8ab1ee65
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>