add changelog and doc

Author: lyu571

.changelog/1482.txt

@@ -0,0 +1,3 @@
+```release-note:new-data-source
+tencentcloud_as_instances
+```

tencentcloud/data_source_tc_as_instances.go

@@ -5,19 +5,18 @@ Example Usage
 
 ```hcl
 data "tencentcloud_as_instances" "instances" {
-  instance_ids =
   filters {
-		name = ""
-		values =
-
-  }
+		name = "auto-scaling-group-id"
+		values = [tencentcloud_as_scaling_group.scaling_group.id]
   }
+}
 ```
 */
 package tencentcloud
 
 import (
 	"context"
+
 	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 	"github.com/hashicorp/terraform-plugin-sdk/helper/schema"
 	as "github.com/tencentcloud/tencentcloud-sdk-go/tencentcloud/as/v20180419"

tencentcloud/data_source_tc_as_instances_test.go

@@ -62,7 +62,6 @@ data "tencentcloud_as_instances" "instances" {
 	filters {
 		name = "auto-scaling-group-id"
 		values = [tencentcloud_as_scaling_group.scaling_group.id]
-
   }
 }
 

website/docs/d/as_instances.html.markdown

@@ -0,0 +1,57 @@
+---
+subcategory: "Auto Scaling(AS)"
+layout: "tencentcloud"
+page_title: "TencentCloud: tencentcloud_as_instances"
+sidebar_current: "docs-tencentcloud-datasource-as_instances"
+description: |-
+  Use this data source to query detailed information of as instances
+---
+
+# tencentcloud_as_instances
+
+Use this data source to query detailed information of as instances
+
+## Example Usage
+
+```hcl
+data "tencentcloud_as_instances" "instances" {
+  filters {
+    name   = "auto-scaling-group-id"
+    values = [tencentcloud_as_scaling_group.scaling_group.id]
+  }
+}
+```
+
+## Argument Reference
+
+The following arguments are supported:
+
+* `filters` - (Optional, List) Filter conditions. If there are multiple Filters, the relationship between Filters is a logical AND (AND) relationship. If there are multiple Values in the same Filter, the relationship between Values under the same Filter is a logical OR (OR) relationship.
+* `instance_ids` - (Optional, Set: [`String`]) Instance ID of the cloud server (CVM) to be queried. The limit is 100 per request.
+* `result_output_file` - (Optional, String) Used to save results.
+
+The `filters` object supports the following:
+
+* `name` - (Required, String) Fields to be filtered. Valid names: `instance-id`: Filters by instance ID, `auto-scaling-group-id`: Filter by scaling group ID.
+* `values` - (Required, Set) Value of the field.
+
+## Attributes Reference
+
+In addition to all arguments above, the following attributes are exported:
+
+* `instance_list` - List of instance details.
+  * `add_time` - The time when the instance joined the group.
+  * `auto_scaling_group_id` - Auto scaling group ID.
+  * `auto_scaling_group_name` - Auto scaling group name.
+  * `creation_type` - Valid values: `AUTO_CREATION`, `MANUAL_ATTACHING`.
+  * `health_status` - Health status, the valid values are HEALTHY and UNHEALTHY.
+  * `instance_id` - Instance ID.
+  * `instance_type` - Instance type.
+  * `launch_configuration_id` - Launch configuration ID.
+  * `launch_configuration_name` - Launch configuration name.
+  * `life_cycle_state` - Life cycle state. Please refer to the link for field value details: https://cloud.tencent.com/document/api/377/20453#Instance.
+  * `protected_from_scale_in` - Enable scale in protection.
+  * `version_number` - Version ID.
+  * `zone` - Available zone.
+
+

website/tencentcloud.erb

@@ -198,6 +198,9 @@
                         <li>
                             <a href="#">Data Sources</a>
                             <ul class="nav nav-auto-expand">
+                                <li>
+                                    <a href="/docs/providers/tencentcloud/d/as_instances.html">tencentcloud_as_instances</a>
+                                </li>
                                 <li>
                                     <a href="/docs/providers/tencentcloud/d/as_scaling_configs.html">tencentcloud_as_scaling_configs</a>
                                 </li>