Not here, I've used a new directory, so the ruby is located on "lib/msf/payload/jsp.rb" (see below), since it's providing the Msf::Payload::JSP namespace. 

ping @todb-r7, @jlee-r7 about that. 

I can switch back to the already in use metasploit naming convention, and move the new file to "/lib/msf/core/payload/jsp.rb" even when it's providing the Msf::Payload::JSP namespace.