remove 12.04 support

.kitchen.vagrant.yml

@@ -24,10 +24,6 @@ transport:
   max_ssh_sessions: 5
 
 platforms:
-- name: ubuntu-12.04
-  driver_config:
-    box: opscode-ubuntu-12.04
-    box_url: https://opscode-vm-bento.s3.amazonaws.com/vagrant/virtualbox/opscode_ubuntu-12.04_chef-provisionerless.box
 - name: ubuntu-14.04
   driver_config:
     box: opscode-ubuntu-14.04

.kitchen.yml

@@ -40,10 +40,6 @@ platforms:
   driver:
     image: rndmh3ro/docker-oracle7-ansible:latest
     platform: centos
-- name: ubuntu1204-ansible-latest
-  driver:
-    image: rndmh3ro/docker-ubuntu1204-ansible:latest
-    platform: ubuntu
 - name: ubuntu1404-ansible-latest
   driver:
     image: rndmh3ro/docker-ubuntu1404-ansible:latest

.travis.yml

@@ -29,10 +29,6 @@ env:
     version: latest
     init: /sbin/init
 
-  - distro: ubuntu1204
-    version: latest
-    init: /sbin/init
-
   - distro: debian7
     version: latest
     init: /sbin/init

README.md

@@ -110,27 +110,27 @@ bundle install
 ### Testing with Docker
 ```
 # fast test on one machine
-bundle exec kitchen test default-ubuntu-1204
+bundle exec kitchen test default-ubuntu-1404
 
 # test on all machines
 bundle exec kitchen test
 
 # for development
-bundle exec kitchen create default-ubuntu-1204
-bundle exec kitchen converge default-ubuntu-1204
+bundle exec kitchen create default-ubuntu-1404
+bundle exec kitchen converge default-ubuntu-1404
 ```
 
 ### Testing with Virtualbox
 ```
 # fast test on one machine
-KITCHEN_YAML=".kitchen.vagrant.yml" bundle exec kitchen test default-ubuntu-1204
+KITCHEN_YAML=".kitchen.vagrant.yml" bundle exec kitchen test default-ubuntu-1404
 
 # test on all machines
 KITCHEN_YAML=".kitchen.vagrant.yml" bundle exec kitchen test
 
 # for development
-KITCHEN_YAML=".kitchen.vagrant.yml" bundle exec kitchen create default-ubuntu-1204
-KITCHEN_YAML=".kitchen.vagrant.yml" bundle exec kitchen converge default-ubuntu-1204
+KITCHEN_YAML=".kitchen.vagrant.yml" bundle exec kitchen create default-ubuntu-1404
+KITCHEN_YAML=".kitchen.vagrant.yml" bundle exec kitchen converge default-ubuntu-1404
 ```
 For more information see [test-kitchen](http://kitchen.ci/docs/getting-started)