add kernel_module integration tests

test/integration/default/kernel_module_spec.rb

@@ -0,0 +1,17 @@
+# encoding: utf-8
+
+# Test kernel modules on all linux systems
+if os.linux?
+
+  describe kernel_module('video') do
+    it { should be_loaded }
+  end
+
+  describe kernel_module('bridge') do
+    it { should_not be_loaded }
+  end
+
+  describe kernel_module('dhcp') do
+    it { should_not be_loaded }
+  end
+end