Land #3428, deprecation warns for payloads

lib/msf/core/module/deprecated.rb

@@ -70,13 +70,19 @@ module Msf::Module::Deprecated
     print_warning("*"*72)
   end
 
+  def init_ui(input = nil, output = nil)
+    super(input, output)
+    print_deprecation_warning
+    @you_have_been_warned = true
+  end
+
   def generate
     print_deprecation_warning
     super
   end
 
   def setup
-    print_deprecation_warning
+    print_deprecation_warning unless @you_have_been_warned
     super
   end