[Auditbeat] Enable System module config on Windows (#10237) (#10361)

Bugfix: Include System module in configuration files on Windows.

(cherry picked from commit e8013bd)

CHANGELOG.next.asciidoc

@@ -66,6 +66,8 @@ https://github.com/elastic/beats/compare/v6.6.0...6.x[Check the HEAD diff]
 
 *Auditbeat*
 
+- Enable System module config on Windows. {pull}10237[10237]
+
 *Filebeat*
 
 - Correctly parse `December` or `Dec` in the Syslog input. {pull}9349[9349]

x-pack/auditbeat/module/system/_meta/config.yml.tmpl

@@ -1,4 +1,3 @@
-{{ if ne .GOOS "windows" -}}
 {{ if .Reference -}}
 # The system module collects security related information about a host.
 # All datasets send both periodic state information (e.g. all currently
@@ -25,17 +24,14 @@
   # The state.period can be overridden for any dataset.
   # host.state.period: 12h
   # process.state.period: 12h
+  {{ if eq .GOOS "linux" -}}
   # socket.state.period: 12h
   # user.state.period: 12h
+  {{- end }}
 {{ end }}
   {{ if eq .GOOS "linux" -}}
   # Enabled by default. Auditbeat will read password fields in
   # /etc/passwd and /etc/shadow and store a hash locally to
   # detect any changes.
   user.detect_password_changes: true
   {{- end }}
-  {{- if false -}}
-  {{/* Only remaining use in packages, to be removed completely. */}}
-  report_changes: true
-  {{- end -}}
-{{- end }}