resolv_integration_test: handle toString changes am: 1bf24426 am: fe4c415c am: 1b72460c am: 9b87222d am: 5c47f22a am: b4c94912

Original change: https://android-review.googlesource.com/c/platform/packages/modules/DnsResolver/+/2397573



Change-Id: I3a6b4fc575efcc46dec53d8731db6c4485cc1b19
Signed-off-by: Automerger Merge Worker <android-build-automerger-merge-worker@system.gserviceaccount.com>