Fix: more generic auditd settings

in order to match the defaults of all mainstream distros

Some of settings are removed, as the defaults of distros are different,
based on the intention of author [1] they are also not really important here

[1]: #44 (comment)

Signed-off-by: Artem Sidorenko <artem@posteo.de>

Author: artem-sidorenko

controls/package_spec.rb

@@ -87,10 +87,8 @@
   describe auditd_conf do
     its('log_file') { should cmp '/var/log/audit/audit.log' }
     its('log_format') { should cmp 'raw' }
-    its('flush') { should cmp 'INCREMENTAL' }
-    its('freq') { should cmp 20 }
+    its('flush') { should match(/^INCREMENTAL|INCREMENTAL_ASYNC$/) }
     its('num_logs') { should cmp 5 }
-    its('max_log_file') { should cmp 6 }
     its('max_log_file_action') { should cmp 'ROTATE' }
     its('space_left') { should cmp 75 }
     its('action_mail_acct') { should cmp 'root' }