enable dnf module for 4.3+

manifests/repo.pp

@@ -22,4 +22,14 @@
     enabled  => true,
   }
   -> anchor { 'katello::repo': } # lint:ignore:anchor_resource
+
+  if $facts['os']['release']['major'] == '8' and ($repo_version == 'nightly' or versioncmp($repo_version, '4.3') >= 0) {
+    package { 'katello-dnf-module':
+      ensure      => "el${facts['os']['release']['major']}",
+      package     => 'katello',
+      enable_only => true,
+      provider    => 'dnfmodule',
+      require     => Yumrepo['katello'],
+    }
+  }
 }

spec/classes/repo_spec.rb

@@ -35,4 +35,26 @@
         .with_enabled(true)
     end
   end
+  context 'with manage_repo => true on EL8 with modular metadata' do
+    let(:facts) { { os: { release: { major: '8' } } } }
+    let :params do
+      {
+        'repo_version' => 'nightly',
+        'dist'         => 'el8',
+        'gpgcheck'     => false,
+      }
+    end
+
+    it do
+      is_expected.to contain_yumrepo('katello')
+        .with_descr('katello nightly')
+        .with_baseurl("https://yum.theforeman.org/katello/nightly/katello/el8/\$basearch/")
+        .with_gpgcheck(false)
+        .with_enabled(true)
+
+      is_expected.to contain_package('katello-dnf-module')
+        .with_ensure('el8')
+        .with_provider('dnfmodule')
+    end
+  end
 end