feat(ECS): import ECS resource, unit test and document.

### resourceName: data_source_flexibleengine_compute_servergroups

docs/data-sources/compute_servergroups.md

@@ -0,0 +1,46 @@
+---
+subcategory: "Elastic Cloud Server (ECS)"
+---
+
+# flexibleengine_compute_servergroups
+
+Use this data source to get the list of the compute server groups.
+
+## Example Usage
+
+```hcl
+variable "name" {}
+
+data "flexibleengine_compute_servergroups" "test" {
+  name = var.name
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `region` - (Optional, String) Specifies the region in which to obtain the server groups.
+  If omitted, the provider-level region will be used.
+
+* `name` - (Optional, String) Specifies the server group name.
+
+## Attribute Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `id` - The data source ID.
+
+* `servergroups` - List of ECS server groups details. The [servergroups](#ecs_servergroups) object structure is
+  documented below.
+
+<a name="ecs_servergroups"></a>
+The `servergroups` block supports:
+
+* `id` - The server group ID in UUID format.
+
+* `name` - The server group name.
+
+* `policies` - The set of policies for the server group.
+
+* `members` - An array of one or more instance ID attached to the server group.

flexibleengine/acceptance/data_source_flexibleengine_compute_servergroups_test.go

@@ -0,0 +1,46 @@
+package acceptance
+
+import (
+	"fmt"
+	"testing"
+
+	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/resource"
+
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/acceptance"
+)
+
+func TestAccComputeServerGroupsDataSource_basic(t *testing.T) {
+	rName := acceptance.RandomAccResourceNameWithDash()
+	dataSourceName := "data.flexibleengine_compute_servergroups.test"
+	dc := acceptance.InitDataSourceCheck(dataSourceName)
+
+	resource.ParallelTest(t, resource.TestCase{
+		PreCheck:          func() { testAccPreCheck(t) },
+		ProviderFactories: TestAccProviderFactories,
+		Steps: []resource.TestStep{
+			{
+				Config: testAccComputeServerGroupsDataSource_basic(rName),
+				Check: resource.ComposeTestCheckFunc(
+					dc.CheckResourceExists(),
+					resource.TestCheckResourceAttr(dataSourceName, "name", rName),
+					resource.TestCheckResourceAttr(dataSourceName, "servergroups.#", "1"),
+					resource.TestCheckResourceAttrSet(dataSourceName, "servergroups.0.id"),
+					resource.TestCheckResourceAttrSet(dataSourceName, "servergroups.0.name"),
+				),
+			},
+		},
+	})
+}
+
+func testAccComputeServerGroupsDataSource_basic(rName string) string {
+	return fmt.Sprintf(`
+resource "flexibleengine_compute_servergroup_v2" "test" {
+  name     = "%s"
+  policies = ["anti-affinity"]
+}
+
+data "flexibleengine_compute_servergroups" "test" {
+  name = flexibleengine_compute_servergroup_v2.test.name
+}
+`, rName)
+}

flexibleengine/provider.go

@@ -9,7 +9,6 @@ import (
 
 	"github.com/hashicorp/terraform-plugin-sdk/v2/diag"
 	"github.com/hashicorp/terraform-plugin-sdk/v2/helper/schema"
-
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud"
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/config"
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/helper/mutexkv"
@@ -26,6 +25,7 @@ import (
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/dms"
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/drs"
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/dws"
+	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/ecs"
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/eip"
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/elb"
 	"github.com/huaweicloud/terraform-provider-huaweicloud/huaweicloud/services/eps"
@@ -285,6 +285,8 @@ func Provider() *schema.Provider {
 			"flexibleengine_cbr_vaults":         cbr.DataSourceCbrVaultsV3(),
 			"flexibleengine_cbr_backup":         cbr.DataSourceBackup(),
 			"flexibleengine_cce_clusters":       cce.DataSourceCCEClusters(),
+
+			"flexibleengine_compute_servergroups": ecs.DataSourceComputeServerGroups(),
 
 			"flexibleengine_ddm_engines":        ddm.DataSourceDdmEngines(),
 			"flexibleengine_ddm_flavors":        ddm.DataSourceDdmFlavors(),
@@ -297,7 +299,8 @@ func Provider() *schema.Provider {
 			"flexibleengine_dms_rocketmq_broker":    dms.DataSourceDmsRocketMQBroker(),
 			"flexibleengine_dms_rocketmq_instances": dms.DataSourceDmsRocketMQInstances(),
 
-			"flexibleengine_dws_flavors":      dws.DataSourceDwsFlavors(),
+			"flexibleengine_dws_flavors": dws.DataSourceDwsFlavors(),
+
 			"flexibleengine_elb_certificate":  elb.DataSourceELBCertificateV3(),
 			"flexibleengine_fgs_dependencies": fgs.DataSourceFunctionGraphDependencies(),