handle portmap service in wheezy
adjust wheezy portmap search to use platform version instead of lsb codename
nfs v0.4.2

Remove nfs::undo only upon conflict in run_list
portmap to rpcbind for debian wheezy
add debian wheezy support
Providing the ability to turn off certain versions of NFS.
Fix #21
Clean-up redundant wheezy contrib
Defer mountd to default proto level

* Add attributes to README
* Default to nil, and maintain default behavior dependent on kernel
  version
[nfs] v0.5.0

* @CloCkWeRX - LWRP multi-line fix
* @walbenzi - toggle-able nfs protocol level 2, or 3
  - defer to default proto level, and default behavior according to installed kernel
  - Add attributes to README

* @ranxxerox & @reoring - Debian wheezy support added