Use new image for kitchen tests

Change-Id: I77895b2c2ad987c3002abff68e563a9520a0b141
diff --git a/.kitchen.yml b/.kitchen.yml
index 5020ac0..2c909a9 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: