Add Dataproc Metastore Database Resource for IAM support

Fixes hashicorp/terraform-provider-google#21822

Author: Noremac201

mmv1/products/metastore/Database.yaml

@@ -0,0 +1,50 @@
+# Copyright 2025 Google Inc.
+# 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.
+---
+name: 'Database'
+description: |
+  Only used to generate IAM resources
+# This resource is only used to generate IAM resources. They do not correspond to real
+# GCP resources, and should not be used to generate anything other than IAM support.
+docs:
+base_url: 'projects/{{project}}/locations/{{location}}/services/{{serviceId}}/databases/{{name}}'
+self_link: 'projects/{{project}}/locations/{{location}}/services/{{serviceId}}/databases/{{name}}'
+exclude_resource: true
+timeouts:
+  insert_minutes: 2
+  update_minutes: 2
+  delete_minutes: 2
+iam_policy:
+  method_name_separator: ':'
+  parent_resource_attribute: 'database'
+  parent_resource_type: "google_dataproc_metastore_service"
+  example_config_body: "templates/terraform/iam/example_config_body/dataproc_metastore_database_template.tf.tmpl"
+  import_format:
+    - '{{name}}'
+    - 'projects/{{project}}/locations/{{location}}/services/{{serviceId}}/databases/{{name}}'
+custom_code:
+examples:
+  - name: 'dataproc_metastore_service_basic'
+    primary_resource_id: 'service'
+    primary_resource_name: 'fmt.Sprintf("tf-test-metastore-srv%s", context["random_suffix"])'
+    test_vars_overrides:
+      database: '"default"'
+      service_resource: '"service"'
+    vars:
+      metastore_service_name: 'service-id'
+parameters:
+properties:
+  - name: 'name'
+    type: String
+    description: Dummy property.
+    required: true

mmv1/templates/terraform/examples/dataproc_metastore_service_database_iam.tf.tmpl

@@ -0,0 +1,6 @@
+resource "google_dataproc_metastore_service" "{{$.PrimaryResourceId}}" {
+  service_id = "{{index $.Vars "metastore_service_name"}}"
+  location   = "us-central1"
+  tier       = "DEVELOPER"
+}
+

mmv1/templates/terraform/iam/example_config_body/dataproc_metastore_database_template.tf.tmpl

@@ -0,0 +1,5 @@
+
+  project = google_dataproc_metastore_service.%{service_resource}.project
+  location = google_dataproc_metastore_service.%{service_resource}.location
+  service_id = google_dataproc_metastore_service.%{service_resource}.service_id
+  database = "%{database}"