Test multiple operating systems for policy

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

Change-Id: If6f7d62fcc4e6edb4d94830ef3ecd4c27eadc90b

spec/classes/mistral_policy_spec.rb

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