Convert tests to use plain rspec-puppet

Tests in the new style produces the following documentation output:

abs
  should not eq nil
  should run abs() and raise an Puppet::ParseError
  should run abs(-34) and return 34
  should run abs("-34") and return 34
  should run abs(34) and return 34
  should run abs("34") and return 34

1 files changed, 1 insertions, 0 deletions

diff --git a/spec/unit/facter/util/puppet_settings_spec.rb b/spec/unit/facter/util/puppet_settings_spec.rb
index c06137d..c278b79 100755
--- a/spec/unit/facter/util/puppet_settings_spec.rb
+++ b/spec/unit/facter/util/puppet_settings_spec.rb
@@ -25,6 +25,7 @@ describe Facter::Util::PuppetSettings do
       before :each do
         Puppet.expects(:[]).with(:vardir).returns vardir
       end
+
       it 'should yield to the block' do
         subject.with_puppet { Puppet[:vardir] }
       end