test: use OS environment variable for kitchen

.kitchen.yml

@@ -1,4 +1,8 @@
 ---
+# <% os =  ENV['OS'] || 'debian9' %>
+# <% ansible = ENV['ANSIBLE_VERSION'] || '2.7' %>
+# <% command = os == 'centos7' ? '/usr/sbin/init' : '/bin/systemd' %>
+
 driver:
   name: docker_cli
 
@@ -15,38 +19,19 @@ provisioner:
   ansible_inventory: ./test/integration/inventory
 
 platforms:
-  - name: debian9
+  - name: <%= os %>
     driver_config:
-      image: "nishiki/debian9:ansible-<%= ENV['ANSIBLE_VERSION'] ? ENV['ANSIBLE_VERSION'] : '2.7' %>"
-      command: /bin/systemd
+      image: "nishiki/<%= os %>:ansible-<%= ansible %>"
+      command: <%= command %>
       volume:
         - /sys/fs/cgroup:/sys/fs/cgroup:ro
       security_opt: seccomp=unconfined
+# <% if os == 'debian9' %>
     provisioner:
       extra_vars:
         sensu_repository_system: ubuntu
         sensu_repository_release: xenial
-  - name: ubuntu18.04
-    driver_config:
-      image: "nishiki/ubuntu18.04:ansible-<%= ENV['ANSIBLE_VERSION'] ? ENV['ANSIBLE_VERSION'] : '2.7' %>"
-      command: /bin/systemd
-      volume:
-        - /sys/fs/cgroup:/sys/fs/cgroup:ro
-      security_opt: seccomp=unconfined
-  - name: ubuntu16.04
-    driver_config:
-      image: "nishiki/ubuntu16.04:ansible-<%= ENV['ANSIBLE_VERSION'] ? ENV['ANSIBLE_VERSION'] : '2.7' %>"
-      command: /bin/systemd
-      volume:
-        - /sys/fs/cgroup:/sys/fs/cgroup:ro
-      security_opt: seccomp=unconfined
-  - name: centos7
-    driver_config:
-      image: "nishiki/centos7:ansible-<%= ENV['ANSIBLE_VERSION'] ? ENV['ANSIBLE_VERSION'] : '2.7' %>"
-      command: /usr/sbin/init
-      volume:
-        - /sys/fs/cgroup:/sys/fs/cgroup:ro
-      security_opt: seccomp=unconfined
+# <% end %>
 
 suites:
   - name: default

.travis.yml

@@ -3,9 +3,12 @@ sudo: required
 language: ruby
 
 env:
-  - ANSIBLE_VERSION=2.5
-  - ANSIBLE_VERSION=2.6
-  - ANSIBLE_VERSION=2.7
+  - OS=debian9 ANSIBLE_VERSION=2.5
+  - OS=debian9 ANSIBLE_VERSION=2.6
+  - OS=debian9 ANSIBLE_VERSION=2.7
+  - OS=ubuntu18.04 ANSIBLE_VERSION=2.7
+  - OS=ubuntu16.04 ANSIBLE_VERSION=2.7
+  - OS=centos7 ANSIBLE_VERSION=2.7
 
 services:
   - docker
@@ -19,7 +22,7 @@ before_install:
 
 script:
   - kitchen conv
-  - kitchen conv default-debian9 | grep changed=0
+  - kitchen conv | grep changed=0
   - kitchen verify
   - ansible-lint -r galaxy-lint-rules/rules .
   - yamllint .

.yamllint

@@ -2,7 +2,7 @@
 extends: default
 
 ignore: |
-  .kitchen/*
+  .kitchen*
   vendor/
 
 rules: