Parameterize JRE package

Add a params class so that puppet can distinguish between JRE packages
on different Ubuntu releases.

Change-Id: Ia1d22379d915d347c549c8cb8785920d97470f06

manifests/init.pp

@@ -17,6 +17,7 @@
 # Class to install common logstash items.
 #
 class logstash {
+  include ::logstash::params
   include ::logrotate
 
   archive { '/tmp/logstash-2.4.1_all.deb':
@@ -26,8 +27,8 @@ class logstash {
     checksum_type => 'sha1',
   }
 
-  if ! defined(Package['openjdk-7-jre-headless']) {
-    package { 'openjdk-7-jre-headless':
+  if ! defined(Package[$::logstash::params::jre_package]) {
+    package { $::logstash::params::jre_package:
       ensure => present,
     }
   }
@@ -38,7 +39,7 @@ class logstash {
     provider => 'dpkg',
     require  => [
       Package['logrotate'],
-      Package['openjdk-7-jre-headless'],
+      Package[$::logstash::params::jre_package],
       Archive['/tmp/logstash-2.4.1_all.deb'],
     ]
   }

manifests/params.pp

@@ -0,0 +1,12 @@
+# logstash::params
+class logstash::params(
+) {
+  case $::lsbdistcodename {
+    'xenial': {
+      $jre_package = 'openjdk-8-jre-headless'
+    }
+    default: {
+      $jre_package = 'openjdk-7-jre-headless'
+    }
+  }
+}

spec/acceptance/basic_spec.rb

@@ -52,7 +52,7 @@ describe 'puppet-logstash module', :if => ['debian', 'ubuntu'].include?(os[:fami
   end
 
   describe 'required package' do
-    describe package('openjdk-7-jre-headless') do
+    describe package('openjdk-8-jre-headless') do
       it { should be_installed }
     end