Create resource_record type

Abstract out the nsupdate provider logic and implement a new resource_record
type around it which applies no semantic value to its title.

Also: support SPF and TXT records, include isrequired on required parameters
(though it doesn't seem to work as advertised)

lib/puppet/provider/resource_record/nsupdate.rb

@@ -0,0 +1,44 @@
+require 'puppet_bind/provider/nsupdate'
+
+Puppet::Type.type(:resource_record).provide(:nsupdate) do
+
+  include PuppetBind::Provider::NsUpdate
+
+  commands :dig => 'dig', :nsupdate => 'nsupdate'
+
+  def initialize(value={})
+    super(value)
+    @properties = {}
+  end
+
+  def data
+    query.map { |record| record[:rrdata] }.sort
+  end
+
+  def data=(data)
+    @properties[:rrdata] = data
+  end
+
+private
+
+  def rrdata
+    data
+  end
+
+  def newdata
+    resource[:data]
+  end
+
+  def rrclass
+    resource[:rrclass]
+  end
+
+  def type
+    resource[:type]
+  end
+
+  def name
+    resource[:record]
+  end
+
+end