internal/db: storage bucket pagination migrations (#4213)

internal/db/schema/migrations/oss/postgres/80/16_storage_bucket_updates.up.sql

@@ -0,0 +1,14 @@
+-- Copyright (c) HashiCorp, Inc.
+-- SPDX-License-Identifier: BUSL-1.1
+
+begin;
+
+  -- Add new indexes for the create time and update time queries.
+  create index storage_plugin_storage_bucket_create_time_public_id_idx
+      on storage_plugin_storage_bucket (create_time desc, public_id desc);
+  create index storage_plugin_storage_bucket_update_time_public_id_idx
+      on storage_plugin_storage_bucket (update_time desc, public_id desc);
+
+  analyze storage_plugin_storage_bucket;
+
+commit;

internal/db/sqltest/tests/pagination/storage_bucket.sql

@@ -0,0 +1,20 @@
+-- Copyright (c) HashiCorp, Inc.
+-- SPDX-License-Identifier: BUSL-1.1
+
+begin;
+  select plan(2);
+
+  select has_index(
+    'storage_plugin_storage_bucket',
+    'storage_plugin_storage_bucket_create_time_public_id_idx',
+    array['create_time', 'public_id']
+  );
+  select has_index(
+    'storage_plugin_storage_bucket',
+    'storage_plugin_storage_bucket_update_time_public_id_idx',
+    array['update_time', 'public_id']
+  );
+
+  select * from finish();
+
+rollback;