Merge "Revert "Remove FakeDns from NetworkStack tests."" into main am: c8d4e0c92c am: 2eee457532

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

Change-Id: I1941f7cf6b430d2c171abc4bc30a4cffb97d5c46
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>