break: remove support ansible < 2.6

.kitchen.yml

@@ -18,7 +18,7 @@ provisioner:
 platforms:
   - name: debian-9
     driver_config:
-      image: "nishiki/debian9:ansible-<%= ENV['ANSIBLE_VERSION'] ? ENV['ANSIBLE_VERSION'] : '2.6' %>"
+      image: "nishiki/debian9:ansible-<%= ENV['ANSIBLE_VERSION'] ? ENV['ANSIBLE_VERSION'] : '2.7' %>"
       command: /bin/systemd
       volume:
         - /sys/fs/cgroup:/sys/fs/cgroup:ro

.travis.yml

@@ -3,9 +3,8 @@ sudo: required
 language: ruby
 
 env:
-  - ANSIBLE_VERSION=2.4
-  - ANSIBLE_VERSION=2.5
   - ANSIBLE_VERSION=2.6
+  - ANSIBLE_VERSION=2.7
 services:
   - docker
 

CHANGELOG.md

@@ -5,6 +5,8 @@ Which is based on [Keep A Changelog](http://keepachangelog.com/)
 
 ## [Unreleased]
 - break: change with_items to loop
+- break: remove support ansible < 2.6
+- test: add test with ansible 2.7
 - test: add ansible-lint
 
 ## v1.2.2 (2018-09-07)