Move defaults.rb to openstack spec helper

This change is to add the defaults.rb to the openstack spec helper so we
have a single place that can be referenced by all the modules to provide
our default facts.

Change-Id: I0e103b1782b02f22f6f9c37658da1e386312a27d

lib/puppet-openstack_spec_helper/defaults.rb

@@ -0,0 +1,22 @@
+# This file contains a module to return a default set of facts and supported
+# operating systems for the tests in this module.
+module OSDefaults
+  def self.get_facts(extra_facts={})
+    { :os_service_default => '<SERVICE DEFAULT>' }.merge(extra_facts)
+  end
+
+  def self.get_supported_os
+    [
+      { 'operatingsystem'        => 'CentOS',
+        'operatingsystemrelease' => [ '7.0' ] },
+      { 'operatingsystem'        => 'RedHat',
+        'operatingsystemrelease' => [ '7.0' ] },
+      { 'operatingsystem'        => 'Fedora',
+        'operatingsystemrelease' => [ '21', '22' ] },
+      { 'operatingsystem'        => 'Ubuntu',
+        'operatingsystemrelease' => [ '14.04' ] },
+      { 'operatingsystem'        => 'Debian',
+        'operatingsystemrelease' => [ '7', '8' ] }
+    ]
+  end
+end