ci(travis): run tests on Debian/Ubuntu first

.travis.yml

@@ -1,13 +1,45 @@
-language: ruby
+# -*- coding: utf-8 -*-
+# vim: ft=yaml
+---
+dist: bionic
+stages:
+  - test
+
 sudo: required
 cache: bundler
-rvm:
-  - 2.3.5
+language: ruby
+
 services:
   - docker
-script:
-  - bundle exec kitchen test
+
+# Make sure the instances listed below match up with
+# the `platforms` defined in `kitchen.yml`
 env:
   matrix:
-    - DISTRIB=debian:jessie/8
-    - DISTRIB=debian:stretch/9
+    - INSTANCE: default-debian-10-develop-py3
+    - INSTANCE: default-ubuntu-1804-develop-py3
+    # - INSTANCE: default-centos-7-develop-py3
+    # - INSTANCE: default-fedora-30-develop-py3
+    # - INSTANCE: default-opensuse-leap-15-develop-py3
+    # - INSTANCE: default-amazonlinux-2-develop-py2
+    - INSTANCE: default-debian-9-2019-2-py3
+    - INSTANCE: default-ubuntu-1804-2019-2-py3
+    # - INSTANCE: default-centos-7-2019-2-py3
+    # - INSTANCE: default-fedora-30-2019-2-py3
+    # - INSTANCE: default-opensuse-leap-15-2019-2-py3
+    # - INSTANCE: default-amazonlinux-2-2019-2-py2
+    - INSTANCE: default-debian-9-2018-3-py2
+    # - INSTANCE: default-ubuntu-1604-2018-3-py2
+    # - INSTANCE: default-centos-7-2018-3-py2
+    # - INSTANCE: default-fedora-29-2018-3-py2
+    # - INSTANCE: default-opensuse-leap-15-2018-3-py2
+    # - INSTANCE: default-amazonlinux-2-2018-3-py2
+    # - INSTANCE: default-debian-8-2017-7-py2
+    # - INSTANCE: default-ubuntu-1604-2017-7-py2
+    # - INSTANCE: default-centos-6-2017-7-py2
+    # - INSTANCE: default-fedora-29-2017-7-py2
+    # - INSTANCE: default-opensuse-leap-15-2017-7-py2
+    # - INSTANCE: default-amazonlinux-2-2017-7-py2
+
+script:
+  - bin/kitchen verify ${INSTANCE}