Add support to pull DNS IP addresses for shared AD

.changelog/20819.txt

@@ -0,0 +1,3 @@
+```release-note:enhancement
+data-source/aws_directory_service_directory: Set `dns_ip_addresses` to the owner directory's DNS IP addresses for SharedMicrosoftAD directories
+```

internal/service/ds/directory_data_source.go

@@ -151,6 +151,8 @@ func dataSourceDirectoryRead(d *schema.ResourceData, meta interface{}) error {
 	d.Set("description", dir.Description)
 	if aws.StringValue(dir.Type) == directoryservice.DirectoryTypeAdconnector {
 		d.Set("dns_ip_addresses", aws.StringValueSlice(dir.ConnectSettings.ConnectIps))
+	} else if aws.StringValue(dir.Type) == directoryservice.DirectoryTypeSharedMicrosoftAd {
+		d.Set("dns_ip_addresses", aws.StringValueSlice(dir.OwnerDirectoryDescription.DnsIpAddrs))
 	} else {
 		d.Set("dns_ip_addresses", aws.StringValueSlice(dir.DnsIpAddrs))
 	}
@@ -159,8 +161,10 @@ func dataSourceDirectoryRead(d *schema.ResourceData, meta interface{}) error {
 	d.Set("name", dir.Name)
 	if aws.StringValue(dir.Type) == directoryservice.DirectoryTypeAdconnector {
 		d.Set("security_group_id", dir.ConnectSettings.SecurityGroupId)
-	} else {
+	} else if dir.VpcSettings != nil {
 		d.Set("security_group_id", dir.VpcSettings.SecurityGroupId)
+	} else {
+		d.Set("security_group_id", nil)
 	}
 	d.Set("short_name", dir.ShortName)
 	d.Set("size", dir.Size)

internal/service/ds/directory_data_source_test.go

@@ -133,6 +133,32 @@ func TestAccDSDirectoryDataSource_connector(t *testing.T) {
 	})
 }
 
+func TestAccDSDirectoryDataSource_sharedMicrosoftAD(t *testing.T) {
+	resourceName := "aws_directory_service_directory.test"
+	dataSourceName := "data.aws_directory_service_directory.test"
+	rName := sdkacctest.RandomWithPrefix(acctest.ResourcePrefix)
+	domainName := acctest.RandomDomainName()
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck: func() {
+			acctest.PreCheck(t)
+			acctest.PreCheckDirectoryService(t)
+			acctest.PreCheckAlternateAccount(t)
+		},
+		ErrorCheck:               acctest.ErrorCheck(t, directoryservice.EndpointsID),
+		ProtoV5ProviderFactories: acctest.ProtoV5FactoriesAlternate(t),
+		Steps: []resource.TestStep{
+			{
+				Config: testAccDirectoryDataSourceConfig_sharedMicrosoftAD(rName, domainName),
+				Check: resource.ComposeAggregateTestCheckFunc(
+					resource.TestCheckResourceAttrPair(resourceName, "dns_ip_addresses.#", dataSourceName, "dns_ip_addresses.#"),
+					resource.TestCheckResourceAttr(dataSourceName, "type", "SharedMicrosoftAD"),
+				),
+			},
+		},
+	})
+}
+
 func testAccDirectoryDataSourceConfig_simpleAD(rName, alias, domain string) string {
 	return acctest.ConfigCompose(acctest.ConfigVPCWithSubnets(rName, 2), fmt.Sprintf(`
 data "aws_directory_service_directory" "test" {
@@ -215,3 +241,19 @@ resource "aws_directory_service_directory" "base" {
 }
 `, domain))
 }
+
+func testAccDirectoryDataSourceConfig_sharedMicrosoftAD(rName, domain string) string {
+	return acctest.ConfigCompose(testAccSharedDirectoryConfig_basic(rName, domain), `
+resource "aws_directory_service_shared_directory_accepter" "test" {
+  provider = "awsalternate"
+
+  shared_directory_id = aws_directory_service_shared_directory.test.shared_directory_id
+}
+
+data "aws_directory_service_directory" "test" {
+  provider = "awsalternate"
+
+  directory_id = aws_directory_service_shared_directory_accepter.test.shared_directory_id
+}
+`)
+}