Update Composer configuration description to inform configuration is not supported in Composer 3 (#12996) (#9310)

[upstream:d886321ea5248ec2ac0574bf27ba112d8d007495]

Signed-off-by: Modular Magician <[email protected]>

Author: modular-magician

.changelog/12996.txt

@@ -0,0 +1,3 @@
+```release-note:none
+composer: inform users that the `task_logs_retention_config` is not relevant to Composer 3 and add `airflow_metadata_retention_config`
+```

google-beta/services/composer/resource_composer_environment.go

@@ -721,14 +721,14 @@ func ResourceComposerEnvironment() *schema.Resource {
 													Type:         schema.TypeString,
 													Optional:     true,
 													ValidateFunc: validation.StringInSlice([]string{"CLOUD_LOGGING_ONLY", "CLOUD_LOGGING_AND_CLOUD_STORAGE"}, false),
-													Description:  `Whether logs in cloud logging only is enabled or not. This field is supported for Cloud Composer environments in versions composer-2.0.32-airflow-2.1.4 and newer.`,
+													Description:  `Whether logs in cloud logging only is enabled or not. This field is supported for Cloud Composer environments in versions composer-2.0.32-airflow-2.1.4 and newer but not in composer-3*`,
 												},
 											},
 										},
 									},
 									"airflow_metadata_retention_config": {
 										Type:        schema.TypeList,
-										Description: `Optional. The configuration setting for database retention.`,
+										Description: `Optional. The policy for airflow metadata database retention.`,
 										Optional:    true,
 										Computed:    true,
 										Elem: &schema.Resource{

website/docs/r/composer_environment.html.markdown

@@ -1367,17 +1367,20 @@ The following arguments are supported:
   [documented below](#nested_data_retention_config_c3).
 
 <a name="nested_data_retention_config_c3"></a>The `data_retention_config` block supports:
-* `task_logs_retention_config` - 
+* `airflow_metadata_retention_config` - 
   (Optional)
-  The configuration setting for Airflow task logs. Structure is
-  [documented below](#nested_task_logs_retention_config_c3).
+  The retention policy for airflow metadata database. Structure is
+  [documented below](#nested_airflow_metadata_retention_config_c3).
 
-<a name="nested_task_logs_retention_config_c3"></a>The `task_logs_retention_config` block supports:
-* `storage_mode` - 
+<a name="nested_airflow_metadata_retention_config_c3"></a>The `airflow_metadata_retention_config` block supports:
+* `retention_mode` - 
   (Optional)
-  The mode of storage for Airflow task logs. Values for storage mode are 
-  `CLOUD_LOGGING_ONLY` to only store logs in cloud logging and 
-  `CLOUD_LOGGING_AND_CLOUD_STORAGE` to store logs in cloud logging and cloud storage.
+  Retention can be either enabled or disabled. Values for retention_mode are 
+  `RETENTION_MODE_ENABLED` to enable retention and `RETENTION_MODE_DISABLED` 
+  to disable retention.
+* `retention_days` - 
+  (Optional)
+  How many days data should be retained for.
 
 
 <a name="nested_storage_config_c3"></a>The `storage_config` block supports: