core: output what we're updating and what we're not

plugins/commands/box/command/update.rb

@@ -45,6 +45,12 @@ module VagrantPlugins
               next
             end
 
+            machine.ui.output(I18n.t(
+              "vagrant.box_updating",
+              name: update[0].name,
+              provider: update[2].name,
+              old: box.version,
+              new: update[1].version))
             @env.action_runner.run(Vagrant::Action.action_box_add, {
               box_url: box.metadata_url,
               box_provider: update[2].name,

templates/locales/en.yml

@@ -48,6 +48,9 @@ en:
       * '%{name}': Error loading metadata: %{message}
     box_outdated_no_metadata: |-
       * '%{name}' wasn't added from a catalog, no version information
+    box_updating: |-
+      Updating '%{name}' with provider '%{provider}' from version
+      '%{old}' to '%{new}'...
     box_up_to_date: |-
       * '%{name}' (v%{version}) is up to date
     box_up_to_date_single: |-