nixos/tests/knot: log systemd unit hardening info

Changed files
+2
nixos
tests
+2
nixos/tests/knot.nix
···
test(host, "RRSIG", "www.example.com", r"RR set signature is")
test(host, "DNSKEY", "example.com", r"DNSSEC key is")
+
+
master.log(master.succeed("systemd-analyze security knot.service | grep -v '✓'"))
'';
})