[20.03] nixos/tinydns: use local dns server to fix test (backport) #80567
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(cherry picked from commit c8a8735)
Motivation for this change
Force host command to use a local DNS server for resolving.
ZHF: #80379
Backport of #80565
Things done
sandbox
innix.conf
on non-NixOS linux)nix-shell -p nixpkgs-review --run "nixpkgs-review wip"
./result/bin/
)nix path-info -S
before and after)This change is