nfs::server: allow arrays for nfs_v4_export_root_clients

The config for nfs_v4_export_root_clients looks horrible when you have
multiple nfs clients.  Update config to allow using arrays

Author: b4ldr

manifests/init.pp

@@ -237,7 +237,7 @@
   String                                                      $client_gssdopt_name                = $nfs::params::client_gssdopt_name,
   Boolean                                                     $client_d9_gssdopt_workaround       = false,
   String                                                      $nfs_v4_export_root                 = '/export',
-  String                                                      $nfs_v4_export_root_clients         = "*.${facts['networking']['domain']}(ro,fsid=root,insecure,no_subtree_check,async,root_squash)",
+  Variant[String, Array[String]]                              $nfs_v4_export_root_clients         = "*.${facts['networking']['domain']}(ro,fsid=root,insecure,no_subtree_check,async,root_squash)",
   String                                                      $nfs_v4_mount_root                  = '/srv',
   String                                                      $nfs_v4_idmap_domain                = $nfs::params::nfs_v4_idmap_domain,
   Variant[String, Array]                                      $nfs_v4_idmap_localrealms           = '', # lint:ignore:params_empty_string_assignment

manifests/server.pp

@@ -25,7 +25,7 @@
   Enum['present', 'absent', 'running', 'stopped', 'disabled'] $ensure                       = $nfs::ensure,
   Boolean                                                     $nfs_v4                       = $nfs::nfs_v4,
   String                                                      $nfs_v4_export_root           = $nfs::nfs_v4_export_root,
-  String                                                      $nfs_v4_export_root_clients   = $nfs::nfs_v4_export_root_clients,
+  Variant[String, Array[String]]                              $nfs_v4_export_root_clients   = $nfs::nfs_v4_export_root_clients,
   String                                                      $nfs_v4_idmap_domain          = $nfs::nfs_v4_idmap_domain,
   String                                                      $nfs_v4_root_export_ensure    = $nfs::nfs_v4_root_export_ensure,
   Optional[String]                                            $nfs_v4_root_export_mount     = $nfs::nfs_v4_root_export_mount,

manifests/server/config.pp

@@ -17,9 +17,10 @@
 
   if $nfs::nfs_v4 {
     if $nfs::nfsv4_bindmount_enable {
+      $nfs_v4_clients = Array($nfs::server::nfs_v4_export_root_clients, true).join(' ')
       concat::fragment { 'nfs_exports_root':
         target  => $nfs::exports_file,
-        content => "${nfs::server::nfs_v4_export_root} ${nfs::server::nfs_v4_export_root_clients}\n",
+        content => "${nfs::server::nfs_v4_export_root} ${nfs_v4_clients}\n",
         order   => 2,
       }
     }

spec/classes/nfs_spec.rb

@@ -402,10 +402,22 @@
           end
         end
 
+        context 'when nfs_v4_export_root_clients is an array' do
+          let(:params) { { nfs_v4: true, server_enabled: true, nfs_v4_export_root_clients: ['192.0.2.1', '192.0.2.2'] } }
+          it do
+            is_expected.to contain_concat__fragment('nfs_exports_root').
+              with_target('/etc/exports').
+              with_content(%r{/export 192\.0\.2\.1 192\.0\.2\.2})
+          end
+        end
         context 'when nfs_v4 => true' do
           let(:params) { { nfs_v4: true, server_enabled: true, client_enabled: false, nfs_v4_idmap_domain: 'teststring' } }
 
-          it { is_expected.to contain_concat__fragment('nfs_exports_root').with('target' => '/etc/exports') }
+          it do
+            is_expected.to contain_concat__fragment('nfs_exports_root').
+              with_target('/etc/exports').
+              with_content(%r{/export \*\.local\(ro,fsid=root,insecure,no_subtree_check,async,root_squash\)})
+          end
           it { is_expected.to contain_file('/export').with('ensure' => 'directory') }
           it { is_expected.to contain_augeas('/etc/idmapd.conf').with_changes(%r{set General/Domain teststring}) }