feat(cloudsql): Terraform sample for final_backup_config (#898)

* Add Terraform sample for cloud sql final backup config

* Add postgres tag

* lint

* Update copyright to current year

---------

Co-authored-by: Katie McLaughlin <[email protected]>

Author: JessieYee

cloud_sql/mysql_instance_final_backup/main.tf

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+/**
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+# [START cloud_sql_mysql_instance_final_backup]
+resource "google_sql_database_instance" "default" {
+  name             = "mysql-instance-final-backup"
+  region           = "asia-northeast1"
+  database_version = "MYSQL_8_0"
+  settings {
+    tier = "db-f1-micro"
+    final_backup_config {
+      enabled        = true
+      retention_days = 10
+    }
+  }
+  final_backup_description = "TF Sample final backup description"
+}
+# [END cloud_sql_mysql_instance_final_backup]

cloud_sql/mysql_instance_final_backup/test.yaml

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: blueprints.cloud.google.com/v1alpha1
+kind: BlueprintTest
+metadata:
+  name: sql_mysql_instance_final_backup
+spec:
+  skip: true

cloud_sql/postgres_instance_final_backup/main.tf

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+/**
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+# [START cloud_sql_postgres_instance_final_backup]
+resource "google_sql_database_instance" "default" {
+  name             = "postgres-instance-final-backup"
+  region           = "us-central1"
+  database_version = "POSTGRES_14"
+  settings {
+    tier = "db-f1-micro"
+    final_backup_config {
+      enabled        = true
+      retention_days = 10
+    }
+  }
+  final_backup_description = "TF Sample final backup description"
+}
+# [END cloud_sql_postgres_instance_final_backup]

cloud_sql/postgres_instance_final_backup/test.yaml

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: blueprints.cloud.google.com/v1alpha1
+kind: BlueprintTest
+metadata:
+  name: sql_postgres_instance_final_backup
+spec:
+  skip: true

cloud_sql/sqlserver_instance_final_backup/main.tf

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+/**
+ * Copyright 2025 Google LLC
+ *
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at
+ *
+ *      http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+# [START cloud_sql_sqlserver_instance_final_backup]
+resource "google_sql_database_instance" "default" {
+  name             = "sqlserver-instance-final-backup"
+  region           = "us-central1"
+  database_version = "SQLSERVER_2019_STANDARD"
+  settings {
+    tier = "db-f1-micro"
+    final_backup_config {
+      enabled        = true
+      retention_days = 10
+    }
+  }
+  final_backup_description = "TF Sample final backup description"
+}
+# [END cloud_sql_sqlserver_instance_final_backup]

cloud_sql/sqlserver_instance_final_backup/test.yaml

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+# Copyright 2025 Google LLC
+#
+# Licensed under the Apache License, Version 2.0 (the "License");
+# you may not use this file except in compliance with the License.
+# You may obtain a copy of the License at
+#
+#      http://www.apache.org/licenses/LICENSE-2.0
+#
+# Unless required by applicable law or agreed to in writing, software
+# distributed under the License is distributed on an "AS IS" BASIS,
+# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+# See the License for the specific language governing permissions and
+# limitations under the License.
+
+apiVersion: blueprints.cloud.google.com/v1alpha1
+kind: BlueprintTest
+metadata:
+  name: sql_sqlserver_instance_final_backup
+spec:
+  skip: true