Add sahara::config class

Other modules provide an X::config class to be able to specify
parameters that are not yet part of the module. Sahara was missing this
feature. This commit aims to add it for puppet-sahara.

Change-Id: Ie8bf79783ae32648dd10792de6d76eeb84877302

manifests/config.pp

@@ -0,0 +1,30 @@
+# == Class: sahara::config
+#
+# This class is used to manage arbitrary Sahara configurations.
+#
+# === Parameters
+#
+# [*sahara_config*]
+#   (optional) Allow configuration of arbitrary Sahara configurations.
+#   The value is an hash of sahara_config resources. Example:
+#   { 'DEFAULT/foo' => { value => 'fooValue'},
+#     'DEFAULT/bar' => { value => 'barValue'}
+#   }
+#   In yaml format, Example:
+#   sahara_config:
+#     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 sahara::config (
+  $sahara_config        = {},
+) {
+
+  validate_hash($sahara_config)
+
+  create_resources('sahara_config', $sahara_config)
+}

spec/classes/sahara_config_spec.rb

@@ -0,0 +1,20 @@
+require 'spec_helper'
+
+describe 'sahara::config' do
+
+  let :params do
+    { :sahara_config => {
+        'DEFAULT/foo' => { 'value'  => 'fooValue' },
+        'DEFAULT/bar' => { 'value'  => 'barValue' },
+        'DEFAULT/baz' => { 'ensure' => 'absent' }
+      }
+    }
+  end
+
+  it 'configures arbitrary sahara configurations' do
+    is_expected.to contain_sahara_config('DEFAULT/foo').with_value('fooValue')
+    is_expected.to contain_sahara_config('DEFAULT/bar').with_value('barValue')
+    is_expected.to contain_sahara_config('DEFAULT/baz').with_ensure('absent')
+  end
+
+end