Add swift to keystone class

This commit adds keystone auth objects to the
openstack::keystone class. This allows users to
easily add a swift services auth user to their
existing keystone servers. It is not enabled by
default.

spec/classes/openstack_keystone_spec.rb

@@ -0,0 +1,61 @@
+require 'spec_helper'
+
+describe 'openstack::keystone' do
+  # minimum set of default parameters
+  let :default_params do
+    {
+      :db_host                => '127.0.0.1',
+      :db_password            => 'pass',
+      :admin_token            => 'token',
+      :admin_email            => 'email@address.com',
+      :admin_password         => 'pass',
+      :glance_user_password   => 'pass',
+      :nova_user_password     => 'pass',
+      :cinder_user_password   => 'pass',
+      :quantum_user_password  => 'pass',
+      :swift_user_password    => false,
+      :public_address         => '127.0.0.1',
+    }
+  end
+
+  let :facts do
+    {
+      :operatingsystem => 'Ubuntu',
+      :osfamily        => 'Debian',
+    }
+  end
+
+  let :params do
+    default_params
+  end
+
+  describe 'without swift' do
+    it { should_not contain_class('swift::keystone::auth') }
+  end
+
+  describe 'swift' do
+    describe 'without password' do
+      let :params do
+        default_params.merge(:swift => true)
+      end
+      it 'should fail when the password is not set' do
+        expect do
+          subject
+        end.to raise_error(Puppet::Error)
+      end
+    end
+    describe 'with password' do
+      let :params do
+        default_params.merge(:swift => true, :swift_user_password => 'dude')
+      end
+      it do
+        should contain_class('swift::keystone::auth').with(
+          :password => 'dude',
+          :address  => '127.0.0.1',
+          :region   => 'RegionOne'
+        )
+      end
+    end
+  end
+
+end