Introduce nova::config

Add a new class nova::config which allows the creation and
management of arbitrary nova_config and nova_api_paste_ini resources.

This will add the ability for the end user to use Hiera to manage
those resources.

Change-Id: Iad7a2b764884887a75f5f6db3e1660644e07c5c0
Closes-bug: #1290634

manifests/config.pp

@@ -0,0 +1,25 @@
+# == Class: nova::config
+#
+# This class is used to manage arbitrary Nova configurations.
+#
+# === Parameters
+#
+# [*nova_config*]
+#   (optional) Allow configuration of arbitrary Nova configurations.
+#   The value is an hash of nova_config resources. Example:
+#   { 'DEFAULT/foo': value => 'fooValue'; 'DEFAULT/bar': value => 'barValue'}
+#
+#   NOTE: The configuration MUST NOT be already handled by this module
+#   or Puppet catalog compilation will fail with duplicate resources.
+#
+class nova::config (
+  $nova_config        = {},
+  $nova_paste_api_ini = {},
+) {
+
+  validate_hash($nova_config)
+  validate_hash($nova_paste_api_ini)
+
+  create_resources('nova_config', $nova_config)
+  create_resources('nova_paste_api_ini', $nova_paste_api_ini)
+}

spec/classes/nova_config_spec.rb

@@ -0,0 +1,30 @@
+require 'spec_helper'
+
+describe 'nova::config' do
+
+  let :params do
+    { :nova_config => {
+        'DEFAULT/foo' => { 'value'  => 'fooValue' },
+        'DEFAULT/bar' => { 'value'  => 'barValue' },
+        'DEFAULT/baz' => { 'ensure' => 'absent' }
+      },
+      :nova_paste_api_ini => {
+        'DEFAULT/foo2' => { 'value'  => 'fooValue' },
+        'DEFAULT/bar2' => { 'value'  => 'barValue' },
+        'DEFAULT/baz2' => { 'ensure' => 'absent' }
+      }
+    }
+  end
+
+  it 'configures arbitrary nova configurations' do
+    should contain_nova_config('DEFAULT/foo').with_value('fooValue')
+    should contain_nova_config('DEFAULT/bar').with_value('barValue')
+    should contain_nova_config('DEFAULT/baz').with_ensure('absent')
+  end
+
+  it 'configures arbitrary nova api-paste configurations' do
+    should contain_nova_paste_api_ini('DEFAULT/foo2').with_value('fooValue')
+    should contain_nova_paste_api_ini('DEFAULT/bar2').with_value('barValue')
+    should contain_nova_paste_api_ini('DEFAULT/baz2').with_ensure('absent')
+  end
+end