Fix wrong conversion from project name to uuid

The transform_to => 'project_uuid' should transform a value between
the following two formats.
 <project name>  <=>  AUTH_<project uuid>

However the existing logic adds unnecessary AUTH_ prefix when
transforming the uuid format back to a project name.

This removes the wrong AUTH_ prefix so that the value is transformed
back to the original value.

Change-Id: I2cba1d06d0c9f18ae2a9679592f3f95c82868a90

lib/puppet/provider/ironic_config/openstackconfig.rb

@@ -23,6 +23,6 @@ Puppet::Type.type(:ironic_config).provide(
     properties = [uuid, '--column', 'name']
     openstack = Puppet::Provider::Ironic::OpenstackRequest.new
     res = openstack.openstack_request('project', 'show', properties)
-    return "AUTH_#{res[:name]}"
+    return res[:name]
   end
 end