add missing payload uuid accessors

lib/msf/core/payload/uuid.rb

@@ -254,6 +254,10 @@ class Msf::Payload::UUID
     self.xor1      = opts[:xor1]
     self.xor2      = opts[:xor2]
 
+    self.timestamp  = nil
+    self.name       = nil
+    self.registered = false
+
     if opts[:seed]
       self.puid = self.class.seed_to_puid(opts[:seed])
     end
@@ -367,6 +371,10 @@ class Msf::Payload::UUID
     self
   end
 
+  attr_accessor :registered
+  attr_accessor :timestamp
+  attr_accessor :name
+
   attr_reader :arch
   attr_reader :platform