merge os-hardening role into collection

roles/os_hardening/tasks/auditd.yml

@@ -0,0 +1,13 @@
+---
+- name: install auditd package | package-08
+  package:
+    name: '{{ auditd_package }}'
+    state: 'present'
+
+- name: configure auditd | package-08
+  template:
+    src: 'etc/audit/auditd.conf.j2'
+    dest: '/etc/audit/auditd.conf'
+    owner: 'root'
+    group: 'root'
+    mode: '0640'