Slaves config file is now a jinja2 template

Change-Id: I593ea08f87997dbd99934ad3b34c38c34fe1b824
diff --git a/common/utils/dockerhelpers.py b/common/utils/dockerhelpers.py
index af23dbc..9708e9e 100644
--- a/common/utils/dockerhelpers.py
+++ b/common/utils/dockerhelpers.py
@@ -210,7 +210,7 @@
                         data = self.client.inspect_image(i)
                     data[i] = data
                 except errors.NotFound:
-                    log.info('No data for container {}'.format(i))
+                    log.debug('No data for container {}'.format(i))
 
             status = get_status(event)
             if status in handlers: