commands/snapshot: use require relative

plugins/commands/snapshot/command/push_shared.rb

@@ -16,6 +16,7 @@ module VagrantPlugins
             end
           end
 
+          # Success, exit with 0
           0
         end
 

plugins/commands/snapshot/command/root.rb

@@ -15,32 +15,32 @@ module VagrantPlugins
 
           @subcommands = Vagrant::Registry.new
           @subcommands.register(:save) do
-            require File.expand_path("../save", __FILE__)
+            require_relative "save"
             Save
           end
 
           @subcommands.register(:restore) do
-            require File.expand_path("../restore", __FILE__)
+            require_relative "restore"
             Restore
           end
 
           @subcommands.register(:delete) do
-            require File.expand_path("../delete", __FILE__)
+            require_relative "delete"
             Delete
           end
 
           @subcommands.register(:list) do
-            require File.expand_path("../list", __FILE__)
+            require_relative "list"
             List
           end
 
           @subcommands.register(:push) do
-            require File.expand_path("../push", __FILE__)
+            require_relative "push"
             Push
           end
 
           @subcommands.register(:pop) do
-            require File.expand_path("../pop", __FILE__)
+            require_relative "pop"
             Pop
           end
         end

plugins/commands/snapshot/plugin.rb

@@ -7,7 +7,7 @@ module VagrantPlugins
       description "The `snapshot` command gives you a way to manage snapshots."
 
       command("snapshot") do
-        require File.expand_path("../command/root", __FILE__)
+        require_relative "command/root"
         Command::Root
       end
     end