data-source/aws_db_instance: Address PR #8317 feedback

Output from acceptance testing: ``` --- PASS: TestAccAWSDbInstanceDataSource_basic (526.46s) ```
hashicorp · May 7, 2019 · a2df236 · a2df236
1 parent 28eaaf7
commit a2df236
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diff --git a/aws/data_source_aws_db_instance.go b/aws/data_source_aws_db_instance.go
@@ -174,6 +174,11 @@ func dataSourceAwsDbInstance() *schema.Resource {
 				Computed: true,
 			},
 
+			"resource_id": {
+				Type:     schema.TypeString,
+				Computed: true,
+			},
+
 			"storage_encrypted": {
 				Type:     schema.TypeBool,
 				Computed: true,

diff --git a/aws/data_source_aws_db_instance_test.go b/aws/data_source_aws_db_instance_test.go
@@ -30,6 +30,7 @@ func TestAccAWSDbInstanceDataSource_basic(t *testing.T) {
 					resource.TestCheckResourceAttrSet("data.aws_db_instance.bar", "port"),
 					resource.TestCheckResourceAttrSet("data.aws_db_instance.bar", "enabled_cloudwatch_logs_exports.0"),
 					resource.TestCheckResourceAttrSet("data.aws_db_instance.bar", "enabled_cloudwatch_logs_exports.1"),
+					resource.TestCheckResourceAttrPair("data.aws_db_instance.bar", "resource_id", "aws_db_instance.bar", "resource_id"),
 				),
 			},
 		},

diff --git a/website/docs/d/db_instance.html.markdown b/website/docs/d/db_instance.html.markdown
@@ -58,6 +58,7 @@ In addition to all arguments above, the following attributes are exported:
 * `preferred_backup_window` - Specifies the daily time range during which automated backups are created.
 * `preferred_maintenance_window` -  Specifies the weekly time range during which system maintenance can occur in UTC.
 * `publicly_accessible` - Specifies the accessibility options for the DB instance.
+* `resource_id` - The RDS Resource ID of this instance.
 * `storage_encrypted` - Specifies whether the DB instance is encrypted.
 * `storage_type` - Specifies the storage type associated with DB instance.
 * `timezone` - The time zone of the DB instance.