Use new image for kitchen tests

Change-Id: Ib42ac718054d7b11d5bf9a82472eaab3d197985d
diff --git a/.kitchen.yml b/.kitchen.yml
index c338a04..f494b9b 100644
--- a/.kitchen.yml
+++ b/.kitchen.yml
@@ -30,9 +30,9 @@
 
 
 platforms:
-  - name: <%=ENV['PLATFORM'] || 'ubuntu-xenial'%>
+  - name: <%=ENV['PLATFORM'] ||  'saltstack-ubuntu-xenial-salt-stable' %>
     driver_config:
-      image: <%=ENV['PLATFORM'] || 'trevorj/salty-whales:xenial'%>
+      image: <%=ENV['PLATFORM'] || 'epcim/salt-formulas:saltstack-ubuntu-xenial-salt-stable'%>
       platform: ubuntu
 
 suites: