commands/box/list: doesn't trigger Vagrantfile loading

CHANGELOG.md

@@ -2,6 +2,7 @@
 
 IMPROVEMENTS:
 
+  - commands/box/list: Doesn't parse Vagrantfile. [GH-3502]
   - providers/hyperv: Implement the provision command. [GH-3494]
 
 BUG FIXES:

bin/vagrant

@@ -24,7 +24,9 @@ end
 # if we're accessing the plugin interface, we want to NOT load plugins
 # for this run, because they can actually interfere with the function
 # of the plugin interface.
-argv.each do |arg|
+argv.each_index do |i|
+  arg = argv[i]
+
   if !arg.start_with?("-")
     if arg == "plugin"
       ENV["VAGRANT_NO_PLUGINS"] = "1"
@@ -35,6 +37,10 @@ argv.each do |arg|
       ENV["VAGRANT_VAGRANTFILE"] = "plugin_command_#{Time.now.to_i}"
     end
 
+    if arg == "box" && argv[i+1] == "list"
+      ENV["VAGRANT_VAGRANTFILE"] = "plugin_command_#{Time.now.to_i}"
+    end
+
     break
   end
 end