Configure debian 8 systems for acceptance tests

* pacemaker and crmsh are delivered in jessie-backports
* openhpid post-install may fail (#408)

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

@@ -10,7 +10,6 @@ HOSTS:
     docker_preserve_image: true
     docker_cmd: '["/sbin/init"]'
     docker_image_commands:
-      - 'echo deb http://ftp.debian.org/debian jessie-backports main >> /etc/apt/sources.list'
       - 'apt-get update && apt-get install -y cron locales-all net-tools wget'
       - 'rm -f /usr/sbin/policy-rc.d'
       - 'systemctl mask getty@tty1.service getty-static.service'

spec/spec_helper_acceptance.rb

@@ -35,6 +35,14 @@
 
     hosts.each do |host|
       on host, puppet('module', 'install', 'puppetlabs-stdlib'), acceptable_exit_codes: [0, 1]
+
+      # For Debian 8 "jessie", we need
+      # - pacemaker and crmsh delivered in jessie-backports only
+      # - openhpid post-install may fail (https://bugs.debian.org/785287)
+      if fact('lsbdistcodename') == 'jessie'
+        on host, 'echo deb http://ftp.debian.org/debian jessie-backports main >> /etc/apt/sources.list'
+        on host, 'apt-get update && apt-get install -y openhpid'
+      end
     end
   end
 end