Would otherwise fail with
```
error: A definition for option `systemd.services.auditd.conflicts."[definition 1-entry 1]"' is not of type `string matching the pattern [a-zA-Z0-9@%:_.\-]+[.](service|socket|device|mount|automount|swap|target|path|timer|scope|slice)'. Definition values:
- In `/nix/store/x2khl2yx0vz2i357x7mz5xm1kagql8ag-source/nixos/modules/security/auditd.nix': "shutdown.target "
```
conversions were done using https://github.com/pennae/nix-doc-munge
using (probably) rev f34e145 running
nix-doc-munge nixos/**/*.nix
nix-doc-munge --import nixos/**/*.nix
the tool ensures that only changes that could affect the generated
manual *but don't* are committed, other changes require manual review
and are discarded.
auditd creates an ordering cycle by adding wantedBy = [ "basic.target" ],
because of this the job job systemd-update-utmp.service/start is deleted.
Adding unitConfig.DefaultDependencies = false; to the auditd service unbreaks the cycle.
See also #11864
#11864 Support Linux audit subsystem
Add the auditd.service as NixOS module to be able to
generate profiles from /var/log/audit/audit.log
with apparmor-utils.
auditd needs the folder /var/log/audit to be present on start
so this is generated in ExecPreStart.
auditd starts with -s nochange so that effective audit processing
is managed by the audit.service.
