Install netbase for /etc/services on Ubuntu 20.04

On Ubuntu 20.04 only the nftables package no longer depends on netbase.

The result is the required `/etc/services` file is not installed.

Always install `netbase` on Ubuntu 20.04

Author: traylenator

manifests/init.pp

@@ -159,6 +159,13 @@
     ensure => installed,
   }
 
+  # /etc/services file is needed, on newer OSes this is a dependency on nftables
+  if $facts['os']['name'] == 'Ubuntu' and $facts['os']['release']['major'] == '20.04' {
+    package { 'netbase':
+      ensure => present,
+    }
+  }
+
   if $clobber_default_config {
     file { $configuration_path:
       ensure  => file,

spec/classes/nftables_spec.rb

@@ -33,6 +33,13 @@
 
       it { is_expected.to contain_package('nftables') }
 
+      case [os_facts[:os]['name'], os_facts[:os]['release']['major']]
+      when ['Ubuntu', '20.04']
+        it { is_expected.to contain_package('netbase') }
+      else
+        it { is_expected.not_to contain_package('netbase') }
+      end
+
       context 'with clobber_default_config false' do
         let(:params) do
           { clobber_default_config: false }