The tests I had in mind don't work with only issuer.nix imported

nixos/modules/tests/private-storage.nix

@@ -308,12 +308,4 @@ in {
         $client->log($log);
         die $@;
       };
-
-      # The issuer metrics should be accessible from the monitoring network.
-      $issuer->execute('ifconfig lo:fauxvpn 172.23.23.2/24');
-      $issuer->execute('systemctl restart nginx.service');
-      $issuer->succeed('curl --silent --insecure --fail --output /dev/null https://172.23.23.2/metrics');
-
-      # The issuer metrics should NOT be accessible from any other network.
-      $issuer->fail('curl --silent --insecure --fail --output /dev/null https://localhost/metrics');
       ''; }