Actually require NetAPI

Author: Tod Beardsley

lib/msf/core/post/windows.rb

@@ -13,6 +13,7 @@ module Msf::Post::Windows
   require 'msf/core/post/windows/registry'
   require 'msf/core/post/windows/services'
   require 'msf/core/post/windows/wmic'
+  require 'msf/core/post/windows/netapi'
   require 'msf/core/post/windows/shadowcopy'
   require 'msf/core/post/windows/user_profiles'
   require 'msf/core/post/windows/ldap'