Fix broken DNS Test

Couple of lines were just wrong (typo?) - and I have reduced our dependence
on multiple static IPs (used to test reverse mapping). It can still get
broken when external servers change their IP addresses though.

Bug: 8658901

Change-Id: I745c958df2f61130798552f0f5f736c73fb5de30
2 files changed
tree: fe0e6ab7b1f5929286d229b7cdd608a757af8c32
  1. tests/