Optimize kitchen tests for Travis CI

Change-Id: Ib3e4186e140495f59f62099d5c428d647ca2bdda
diff --git a/.travis.yml b/.travis.yml
index 3afcf15..2042e1d 100644
--- a/.travis.yml
+++ b/.travis.yml
@@ -27,7 +27,8 @@
   - make test | tail
 
 script:
-  - KITCHEN_LOCAL_YAML=.kitchen.travis.yml bundle exec kitchen test -t tests/integration
+  - test ! -e .kitchen.yml || bundle exec kitchen converge ${SUITE} || true
+  - test ! -e .kitchen.yml || bundle exec kitchen verify ${SUITE} -t tests/integration
 
 notifications:
   webhooks: