resource/aws_launch_template: Add acceptance test for placement host_…

…resource_group_arn and CHANGELOG for #15785

Output from acceptance testing:

```
--- PASS: TestAccAWSLaunchTemplate_associateCarrierIPAddress (113.88s)
--- PASS: TestAccAWSLaunchTemplate_associatePublicIPAddress (112.32s)
--- PASS: TestAccAWSLaunchTemplate_basic (26.20s)
--- PASS: TestAccAWSLaunchTemplate_BlockDeviceMappings_EBS (62.22s)
--- PASS: TestAccAWSLaunchTemplate_BlockDeviceMappings_EBS_DeleteOnTermination (80.25s)
--- PASS: TestAccAWSLaunchTemplate_BlockDeviceMappings_EBS_Gp3 (67.53s)
--- PASS: TestAccAWSLaunchTemplate_capacityReservation_preference (30.12s)
--- PASS: TestAccAWSLaunchTemplate_capacityReservation_target (32.17s)
--- PASS: TestAccAWSLaunchTemplate_cpuOptions (20.02s)
--- PASS: TestAccAWSLaunchTemplate_creditSpecification_nonBurstable (23.74s)
--- PASS: TestAccAWSLaunchTemplate_creditSpecification_t2 (27.49s)
--- PASS: TestAccAWSLaunchTemplate_creditSpecification_t3 (26.61s)
--- PASS: TestAccAWSLaunchTemplate_data (31.18s)
--- PASS: TestAccAWSLaunchTemplate_defaultVersion (66.15s)
--- PASS: TestAccAWSLaunchTemplate_description (49.72s)
--- PASS: TestAccAWSLaunchTemplate_disappears (21.60s)
--- PASS: TestAccAWSLaunchTemplate_EbsOptimized (90.05s)
--- PASS: TestAccAWSLaunchTemplate_ElasticInferenceAccelerator (48.44s)
--- PASS: TestAccAWSLaunchTemplate_enclaveOptions (70.97s)
--- PASS: TestAccAWSLaunchTemplate_hibernation (70.97s)
--- PASS: TestAccAWSLaunchTemplate_IamInstanceProfile_EmptyConfigurationBlock (23.89s)
--- PASS: TestAccAWSLaunchTemplate_instanceMarketOptions (81.70s)
--- PASS: TestAccAWSLaunchTemplate_licenseSpecification (31.41s)
--- PASS: TestAccAWSLaunchTemplate_metadataOptions (30.40s)
--- PASS: TestAccAWSLaunchTemplate_networkInterface (71.60s)
--- PASS: TestAccAWSLaunchTemplate_networkInterface_ipv6AddressCount (32.24s)
--- PASS: TestAccAWSLaunchTemplate_networkInterface_ipv6Addresses (31.31s)
--- PASS: TestAccAWSLaunchTemplate_networkInterfaceAddresses (71.44s)
--- PASS: TestAccAWSLaunchTemplate_NetworkInterfaces_DeleteOnTermination (85.38s)
--- PASS: TestAccAWSLaunchTemplate_Placement_HostResourceGroupArn (33.94s)
--- PASS: TestAccAWSLaunchTemplate_placement_partitionNum (51.75s)
--- PASS: TestAccAWSLaunchTemplate_tags (49.81s)
--- PASS: TestAccAWSLaunchTemplate_update (80.24s)
--- PASS: TestAccAWSLaunchTemplate_updateDefaultVersion (89.33s)

--- PASS: TestAccAWSLaunchTemplateDataSource_associateCarrierIPAddress (52.34s)
--- PASS: TestAccAWSLaunchTemplateDataSource_associatePublicIPAddress (75.31s)
--- PASS: TestAccAWSLaunchTemplateDataSource_basic (28.98s)
--- PASS: TestAccAWSLaunchTemplateDataSource_enclaveOptions (29.01s)
--- PASS: TestAccAWSLaunchTemplateDataSource_filter_basic (27.33s)
--- PASS: TestAccAWSLaunchTemplateDataSource_filter_tags (26.50s)
--- PASS: TestAccAWSLaunchTemplateDataSource_id_basic (30.08s)
--- PASS: TestAccAWSLaunchTemplateDataSource_metadataOptions (27.67s)
--- PASS: TestAccAWSLaunchTemplateDataSource_networkInterfaces_deleteOnTermination (61.06s)
--- PASS: TestAccAWSLaunchTemplateDataSource_NonExistent (3.34s)
```

.changelog/15785.txt

@@ -0,0 +1,7 @@
+```release-note:enhancement
+data-source/aws_launch_template: Add `placement` `host_resource_group_arn` attribute
+```
+
+```release-note:enhancement
+resource/aws_launch_template: Add `placement` `host_resource_group_arn` argument
+```

aws/resource_aws_launch_template_test.go

@@ -877,6 +877,33 @@ func TestAccAWSLaunchTemplate_associateCarrierIPAddress(t *testing.T) {
 	})
 }
 
+func TestAccAWSLaunchTemplate_Placement_HostResourceGroupArn(t *testing.T) {
+	var template ec2.LaunchTemplate
+	resourceName := "aws_launch_template.test"
+	rName := acctest.RandomWithPrefix("tf-acc-test")
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:     func() { testAccPreCheck(t) },
+		ErrorCheck:   testAccErrorCheck(t, ec2.EndpointsID),
+		Providers:    testAccProviders,
+		CheckDestroy: testAccCheckAWSLaunchTemplateDestroy,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccAWSLaunchTemplateConfigPlacementHostResourceGroupArn(rName),
+				Check: resource.ComposeTestCheckFunc(
+					testAccCheckAWSLaunchTemplateExists(resourceName, &template),
+					resource.TestCheckResourceAttrPair(resourceName, "placement.0.host_resource_group_arn", "aws_resourcegroups_group.test", "arn"),
+				),
+			},
+			{
+				ResourceName:      resourceName,
+				ImportState:       true,
+				ImportStateVerify: true,
+			},
+		},
+	})
+}
+
 func TestAccAWSLaunchTemplate_placement_partitionNum(t *testing.T) {
 	var template ec2.LaunchTemplate
 	resourceName := "aws_launch_template.test"
@@ -1746,6 +1773,34 @@ resource "aws_launch_template" "test" {
 `, rName, partNum)
 }
 
+func testAccAWSLaunchTemplateConfigPlacementHostResourceGroupArn(rName string) string {
+	return fmt.Sprintf(`
+resource "aws_resourcegroups_group" "test" {
+  name = %[1]q
+
+  resource_query {
+    query = jsonencode({
+      ResourceTypeFilters = ["AWS::EC2::Instance"]
+      TagFilters = [
+        {
+          Key    = "Stage"
+          Values = ["Test"]
+        },
+      ]
+    })
+  }
+}
+
+resource "aws_launch_template" "test" {
+  name = %[1]q
+
+  placement {
+    host_resource_group_arn = aws_resourcegroups_group.test.arn
+  }
+}
+`, rName)
+}
+
 func testAccAWSLaunchTemplateConfig_networkInterfaceAddresses(rName string) string {
 	return fmt.Sprintf(`
 resource "aws_vpc" "test" {