Add machine level warning when privileged option is set for run

plugins/kernel_v2/config/vm_trigger.rb

@@ -149,6 +149,11 @@ module VagrantPlugins
         if @run
           errorz = @run.validate(machine)
           errors.concat errorz["shell provisioner"] if !errorz.empty?
+
+          if @run.privileged == true
+            machine.ui.warn(I18n.t("vagrant.config.triggers.privileged_ignored",
+                                  command: @command))
+          end
         end
 
         if @run_remote

templates/locales/en.yml

@@ -1717,6 +1717,8 @@ en:
           only be `:halt` (default) or `:continue`.
         only_on_bad_type: |-
           Invalid type found for `only_on`. All values must be a `String` or `Regexp`.
+        privileged_ignored: |-
+          The `privileged` setting for option `run` for trigger command '%{command}' will be ignored and set to false.
         run:
           bad_type: |-
             Invalid type set for `run` on trigger for command '%{cmd}'. `run`