Add kitchen tests for logging

Change-Id: I6128990cf605f81163eebd37d4d923f93dc9e5d1
diff --git a/tests/pillar/single_multiple_backends.sls b/tests/pillar/single_multiple_backends.sls
index 3ca1e4e..8b4fd28 100644
--- a/tests/pillar/single_multiple_backends.sls
+++ b/tests/pillar/single_multiple_backends.sls
@@ -28,6 +28,15 @@
       region: RegionOne
       tenant: service
       endpoint_type: internalURL
+    logging:
+      log_appender: false
+      log_handlers:
+        watchedfile:
+          enabled: true
+        fluentd:
+          enabled: false
+        ossyslog:
+          enabled: false
     message_queue:
       engine: rabbitmq
       host: 127.0.0.1