Fix older Windows payloads to not require UUID

Default Windows payload to not include_send_uuid for compatibility.

Author: RageLtMan

lib/msf/core/payload/windows.rb

@@ -163,5 +163,13 @@ def self.exit_types
     @@exit_types.dup
   end
 
+  #
+  # By default, we don't want to send the UUID, but we'll send
+  # for certain payloads if requested.
+  #
+  def include_send_uuid
+    false
+  end
+
 end