Fix idempotency

.kitchen.dokken.yml

@@ -1,18 +1,17 @@
 driver:
   name: dokken
-  chef_version: latest
   privileged: true # because Docker and SystemD/Upstart
+  chef_version: <%= ENV['CHEF_VERSION'] || 'current' %>
   volumes:
     - /sys/fs/cgroup:/sys/fs/cgroup
+  chef_license: accept-no-persist
 
 transport:
   name: dokken
 
 provisioner:
   name: dokken
   # chef_log_level: debug
-  client_rb:
-    chef_license: accept
 
 verifier:
   root_path: '/opt/verifier'

.kitchen.yml

@@ -6,10 +6,8 @@ verifier:
 
 provisioner:
   name: chef_zero
-  product_name: chef
   install_strategy: <%= ENV['KI_INSTALL_STRATEGY'] || 'once' %>
-  client_rb:
-    chef_license: accept
+  chef_license: accept-no-persist
 
 transport:
   name: "ssh"

.travis.yml

@@ -1,4 +1,3 @@
-sudo: required
 dist: xenial
 
 before_install:
@@ -7,6 +6,9 @@ before_install:
 
 install: ./bin/ci/install_chef_dk.sh
 
+env:
+  - CHEF_LICENSE=accept
+
 cache: bundler
 
 services: docker