This will not be pulled into core chef.  The conventional
chef node attributes API should be used instead.

- The `#in?` helper is dropped as being too trivial

- The deep fetch API was implemented ages ago in `node.read[!]`

- The namespace API will not be accepted into core due to the
  utilization of method_missing.

Signed-off-by: Lamont Granquist <lamont@scriptkiddie.org>