chore: use semantic-release cross-formula standard structure

.gitignore

@@ -48,6 +48,7 @@ coverage.xml
 .kitchen
 .kitchen.local.yml
 kitchen.local.yml
+junit-*.xml
 
 # Translations
 *.mo
@@ -111,3 +112,11 @@ docs/*.md
 
 # Vim
 *.sw?
+
+## Collected when centralising formulas (check and sort)
+# `collectd-formula`
+.pytest_cache/
+/.idea/
+Dockerfile.*_*
+ignore/
+tmp/

.travis.yml

@@ -1,3 +1,6 @@
+# -*- coding: utf-8 -*-
+# vim: ft=yaml
+---
 stages:
   - test
   - commitlint
@@ -7,6 +10,7 @@ stages:
 sudo: required
 cache: bundler
 language: ruby
+dist: xenial
 
 services:
   - docker
@@ -29,19 +33,15 @@ env:
     # - INSTANCE: default-ubuntu-1604-2018-3-py2
     # - INSTANCE: default-centos-7-2018-3-py2
     - INSTANCE: default-fedora-29-2018-3-py2
-    # TODO: Use this when fixed instead of `opensuse-leap-42`
-    # Ref: https://github.com/netmanagers/salt-image-builder/issues/2
-    # - INSTANCE: default-opensuse-leap-15-2018-3-py2
     - INSTANCE: default-opensuse-leap-42-2018-3-py2
     # - INSTANCE: default-debian-8-2017-7-py2
     # - INSTANCE: default-ubuntu-1604-2017-7-py2
-    # TODO: Enable after improving the formula to work with other than `systemd`
     - INSTANCE: default-centos-6-2017-7-py2
     # - INSTANCE: default-fedora-28-2017-7-py2
     # - INSTANCE: default-opensuse-leap-42-2017-7-py2
 
 script:
-  - bundle exec kitchen verify ${INSTANCE}
+  - bin/kitchen verify ${INSTANCE}
 
 jobs:
   include:

docs/CONTRIBUTING.rst

@@ -157,4 +157,3 @@ An example of that:
    `template package`, this formula no longer supports the installation of
    packages.
 
-