Use new image for kitchen tests

Change-Id: I9313641a80c1e7bc7e83e99a9afe7b504e9d1dae
diff --git a/.travis.yml b/.travis.yml
index 93b511f..6d120af 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -17,9 +17,9 @@
   - bundle install
 
 env:
-    - PLATFORM=trevorj/salty-whales:trusty SUITE=client
-    - PLATFORM=trevorj/salty-whales:xenial SUITE=client
-
+    - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2016.3 SUITE=client
+    - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-xenial-salt-2017.7 SUITE=client
+#    - PLATFORM=epcim/salt-formulas:saltstack-ubuntu-bionic-salt-2017.7 SUITE=client
 
 before_script:
   - set -o pipefail