(FM-5091) Implement docker-based full-system tests

This uses travis to run a preliminary evaluation of PRs using the
spec/acceptance test suites running in a docker container on a VM-based
travis runner. This allows us to evaluate the effects of a change before
merging it.

config_defaults.yml

@@ -1,6 +1,17 @@
 ---
 .travis.yml:
   script: "\"bundle exec rake validate lint spec\""
+  docker_sets:
+  - set: docker/ubuntu-14.04
+  - set: docker/centos-7
+  docker_defaults:
+    # values will replace @@SET@@ with the docker_sets' value
+    rvm: 2.1.6
+    sudo: required
+    dist: trusty
+    services: docker
+    env: PUPPET_INSTALL_TYPE=agent BEAKER_debug=true BEAKER_set=@@SET@@
+    script: bundle exec rake beaker
   includes:
   - rvm: 2.1.6
     env: PUPPET_GEM_VERSION="~> 4.0" STRICT_VARIABLES="yes"

moduleroot/.travis.yml

@@ -3,26 +3,44 @@
 sudo: false
 language: ruby
 cache: bundler
-bundler_args: --without system_tests
 script: <%= @configs['script'] %>
 matrix:
   fast_finish: true
   include:
-<% @configs['includes'].each do |include| -%>
-  - rvm: <%= include['rvm'] %>
-    env: <%= include['env'] %>
+<% if @configs['docker_sets'] -%>
+<%   @configs['docker_sets'].each do |set| -%>
+<%     job = (set['options'] || {}).merge(@configs['docker_defaults']) -%>
+  - rvm: <%= job['rvm'] %>
+<%     job.keys.sort.each do |k| -%>
+<%     next if k == 'rvm' -%>
+    <%= k %>: <%= job[k].gsub(/@@SET@@/, set['set']) %>
+<%     end -%>
+<%   end -%>
+<% end -%>
+<% @configs['includes'].each do |job| -%>
+  - rvm: <%= job['rvm'] %>
+<%   job.keys.sort.each do |k| -%>
+<%     next if k == 'rvm' -%>
+    <%= k %>: <%= job[k] %>
+<%   end -%>
 <% end -%>
 <% if @configs['extras'] -%>
-<%   @configs['extras'].each do |extra| -%>
-  - rvm: <%= extra['rvm'] %>
-    env: <%= extra['env'] %>
+<%   @configs['extras'].each do |job| -%>
+  - rvm: <%= job['rvm'] %>
+<%     job.keys.sort.each do |k| -%>
+<%       next if k == 'rvm' -%>
+    <%= k %>: <%= job[k] %>
+<%     end -%>
 <%   end -%>
 <% end -%>
 <% if @configs['allow_failures'] -%>
-<%   @configs['allow_failures'].each do |allow_failures| -%>
   allow_failures:
-    - rvm: <%= allow_failures['rvm'] %>
-      env: <%= allow_failures['env'] %>
+<%   @configs['allow_failures'].each do |job| -%>
+    - rvm: <%= job['rvm'] %>
+<%     job.keys.sort.each do |k| -%>
+<%       next if k == 'rvm' -%>
+      <%= k %>: <%= job[k] %>
+<%     end -%>
 <%   end -%>
 <% end -%>
 notifications:

moduleroot/spec/acceptance/nodesets/docker/centos-7.yml

@@ -0,0 +1,12 @@
+HOSTS:
+  centos-7-x64:
+    platform: el-7-x86_64
+    hypervisor: docker
+    image: centos:7
+    docker_preserve_image: true
+    docker_cmd: '["/usr/sbin/init"]'
+    # install various tools required to get the image up to usable levels
+    docker_image_commands:
+      - 'yum install -y crontabs tar wget openssl sysvinit-tools iproute which initscripts'
+CONFIG:
+  trace_limit: 200

moduleroot/spec/acceptance/nodesets/docker/debian-8.yml

@@ -0,0 +1,11 @@
+HOSTS:
+  debian-8-x64:
+    platform: debian-8-amd64
+    hypervisor: docker
+    image: debian:8
+    docker_preserve_image: true
+    docker_cmd: '["/sbin/init"]'
+    docker_image_commands:
+      - 'apt-get update && apt-get install -y net-tools wget locales strace lsof && echo "en_US.UTF-8 UTF-8" > /etc/locale.gen && locale-gen'
+CONFIG:
+  trace_limit: 200

moduleroot/spec/acceptance/nodesets/docker/ubuntu-14.04.yml

@@ -0,0 +1,12 @@
+HOSTS:
+  ubuntu-1404-x64:
+    platform: ubuntu-14.04-amd64
+    hypervisor: docker
+    image: ubuntu:14.04
+    docker_preserve_image: true
+    docker_cmd: '["/sbin/init"]'
+    docker_image_commands:
+      # ensure that upstart is booting correctly in the container
+      - 'rm /usr/sbin/policy-rc.d && rm /sbin/initctl && dpkg-divert --rename --remove /sbin/initctl && apt-get update && apt-get install -y net-tools wget && locale-gen en_US.UTF-8'
+CONFIG:
+  trace_limit: 200