Add RedHat 8 support (#257)

manifests/params.pp

@@ -4,18 +4,18 @@ class postfix::params {
       $aliasesseltype = $::operatingsystemmajrelease ? {
         '4'     => 'etc_t',
         /5/     => 'postfix_etc_t',
-        /6|7/   => 'etc_aliases_t',
+        /6|7|8/   => 'etc_aliases_t',
         default => undef,
       }
 
       $seltype = $::operatingsystemmajrelease ? {
         '4'     => 'etc_t',
-        /5|6|7/ => 'postfix_etc_t',
+        /5|6|7|8/ => 'postfix_etc_t',
         default => undef,
       }
 
       $restart_cmd = $::operatingsystemmajrelease ? {
-        '7'     => '/bin/systemctl reload postfix',
+        /7|8/     => '/bin/systemctl reload postfix',
         default => '/etc/init.d/postfix reload',
       }
 

metadata.json

@@ -50,7 +50,8 @@
       "operatingsystem": "RedHat",
       "operatingsystemrelease": [
         "6",
-        "7"
+        "7",
+        "8"
       ]
     },
     {

spec/classes/postfix_spec.rb

@@ -45,6 +45,15 @@ describe 'postfix' do
           it { is_expected.to contain_postfix__config('mailq_path') }
 
           case facts[:operatingsystemmajrelease]
+          when '8'
+            it { is_expected.to contain_file('/etc/aliases').with_seltype('etc_aliases_t').with_content("# file managed by puppet\n") }
+            it {
+              is_expected.to contain_service('postfix').with(
+                :ensure    => 'running',
+                :enable    => 'true',
+                :hasstatus => 'true',
+                :restart   => '/bin/systemctl reload postfix'
+              ) }
           when '7'
             it { is_expected.to contain_file('/etc/aliases').with_seltype('etc_aliases_t').with_content("# file managed by puppet\n") }
             it {