(bug) - Honour custom insync in noop mode

Prior to this commit, a custom insync message was not honoured when
applying a manifest in noop mode. This was later tracked down the the
`noop` method found in the resource harness class.

I've updated the method to match that of the `sync` method below,
ensuring that the functionality of the custom isync provider feature is
not any different whether running puppet in noop or no-noop mode.

Author: jordanbreen28

lib/puppet/transaction/resource_harness.rb

@@ -235,9 +235,13 @@ def audit_message(param, do_audit, historical_value, current_value)
   end
 
   def noop(event, param, current_value, audit_message)
-    event.message = param.format(_("current_value %s, should be %s (noop)"),
-                                 param.is_to_s(current_value),
-                                 param.should_to_s(param.should)) + audit_message.to_s
+    if param.sensitive
+      event.message = param.format(_("current_value %s, should be %s (noop)"),
+                                   param.is_to_s(current_value),
+                                   param.should_to_s(param.should)) + audit_message.to_s
+    else
+      event.message = "#{param.change_to_s(current_value, param.should)}#{audit_message} (noop)"
+    end
     event.status = "noop"
   end