nixos/tests/loki: satisfy linter

Apparently, the linter used for python test-scripts just decided that
a reformat of the testscript is now necessary.

Changed files
+3 -1
nixos
tests
+3 -1
nixos/tests/loki.nix
···
machine.wait_for_open_port(9080)
machine.succeed("echo 'Loki Ingestion Test' > /var/log/testlog")
# should not have access to journal unless specified
-
machine.fail("systemctl show --property=SupplementaryGroups promtail | grep -q systemd-journal")
machine.wait_until_succeeds(
"${pkgs.grafana-loki}/bin/logcli --addr='http://localhost:3100' query --no-labels '{job=\"varlogs\",filename=\"/var/log/testlog\"}' | grep -q 'Loki Ingestion Test'"
)
···
machine.wait_for_open_port(9080)
machine.succeed("echo 'Loki Ingestion Test' > /var/log/testlog")
# should not have access to journal unless specified
+
machine.fail(
+
"systemctl show --property=SupplementaryGroups promtail | grep -q systemd-journal"
+
)
machine.wait_until_succeeds(
"${pkgs.grafana-loki}/bin/logcli --addr='http://localhost:3100' query --no-labels '{job=\"varlogs\",filename=\"/var/log/testlog\"}' | grep -q 'Loki Ingestion Test'"
)