Test multiple operating systems for policy

Use on_supported_os function to test multiple
operating systems for class ironic::policy.

Change-Id: Ie7a43a009fcd3a6333563e6f2546bcf0bf7928a0

spec/classes/ironic_policy_spec.rb

@@ -24,19 +24,16 @@ describe 'ironic::policy' do
     end
   end
 
-  context 'on Debian platforms' do
-    let :facts do
-       @default_facts.merge({ :osfamily => 'Debian' })
-    end
+  on_supported_os({
+    :supported_os   => OSDefaults.get_supported_os
+  }).each do |os,facts|
+    context "on #{os}" do
+      let (:facts) do
+        facts.merge!(OSDefaults.get_facts())
+      end
 
-    it_configures 'ironic policies'
+      it_configures 'ironic policies'
+    end
   end
 
-  context 'on RedHat platforms' do
-    let :facts do
-       @default_facts.merge({ :osfamily => 'RedHat' })
-    end
-
-    it_configures 'ironic policies'
-  end
 end