Comment 5 for bug 1313550

OK, so with 14.04 level maas, this is fairly trivial.
  'tar --xattrs --xattrs-include=*'

Unfortunately, 12.04 level maas doesn't have that, so we'd have to do some backwards compatibility check/fix/hack if we want to support

the fix in the installer was to do something like:
 getfattr | setfattr

sudo getfattr --absolute-names --recursive -hysical --match=- --dump /
seems to dump attrs, we could store that inside the tar as a file.