Issue 198 - Disable Dual Scan

Add parameter disable_dual_scan (default undef) to be able to not allow
update deferral policies to cause scans against Windows Update
when using WSUS server

manifests/init.pp

@@ -136,6 +136,10 @@
 #   This enabled parameter is only respected when the WSUS server allows clients to modify this setting via the TargetGroup and
 #   TargetGroupEnabled registry keys.
 #
+# @param disable_dual_scan
+#   Enable this policy to not allow update deferral policies to cause scans against Windows Update.
+#   Valid options: 'true', 'false', and undef. Default: undef.
+#
 class wsus_client (
   Optional[Variant[Stdlib::HTTPUrl,Boolean]] $server_url                                                            = undef,
   Optional[Boolean] $enable_status_server                                                                           = undef,
@@ -157,6 +161,7 @@
   Optional[Variant[Integer[15,180],Boolean]] $always_auto_reboot_at_scheduled_time_minutes                          = undef,
   Boolean $purge_values                                                                                             = false,
   Optional[Variant[String,Boolean]] $target_group                                                                   = undef,
+  Optional[Boolean] $disable_dual_scan                                                                              = undef,
 ) {
   $_basekey = 'HKLM\Software\Policies\Microsoft\Windows\WindowsUpdate'
 
@@ -244,6 +249,12 @@
     validate_bool => true,
   }
 
+  wsus_client::setting { "${_basekey}\\DisableDualScan":
+    data          => $disable_dual_scan,
+    has_enabled   => false,
+    validate_bool => true,
+  }
+
   wsus_client::setting { "${_basekey}\\ElevateNonAdmins":
     data          => $elevate_non_admins,
     has_enabled   => false,

spec/acceptance/wsus_client_spec.rb

@@ -314,4 +314,10 @@ def create_apply_manifest(params, clear_first = true)
       end
     end
   end
+
+  context 'with disable_dual_scan =>', testrail: ['70270', '70271'] do
+    it_behaves_like 'boolean values',
+                    :disable_dual_scan,
+                    'DisableDualScan'
+  end
 end