Use new image for kitchen tests

Change-Id: Icf732c4d918d5fa560596d7e8596abb49ed8c216
diff --git a/.travis.yml b/.travis.yml
index b367f1f..b55f809 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,7 +17,9 @@
   - bundle install
 
 env:
-    - PLATFORM=trevorj/salty-whales:xenial-2017.7 SUITE=default
+    - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2017.7 SUITE=default
+    - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2016.3 SUITE=default
+#    - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-bionic-salt-2017.7 SUITE=default
 
 before_script:
   - set -o pipefail