Started moving the old ship stage into the image recipes.  The previous copy
functions are now in a do_ship task.  This may change but is a good start.
do_ship is implemented in a class and overridded in a couple special recipes.
Being that not all recipes need to run do_ship the actual addtask is recipe
specific.  Also remove xenclient-initramfs-image as that was already renamed
to drop xenclient.