Secrets: garbage collection (#110247)

* clean up older secret versions

* start gargbage collection worker as background service

* make gen-go

* fix typo

* make update-workspace

* undo go mod changes

* undo go work sum changes

* Update pkg/registry/apis/secret/garbagecollectionworker/worker.go

Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

* Update pkg/registry/apis/secret/garbagecollectionworker/worker.go

Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

* default gc_worker_batch_size to 1 minute

* fix typo

* fix typo

* add test to ensure cleaning up secure values is idempotent

* make gen-go

* make update-workspace

* undo go.mod and .sum changes

* undo enterprise imports

---------

Co-authored-by: Matheus Macabu <macabu.matheus@gmail.com>
Co-authored-by: Matheus Macabu <macabu@users.noreply.github.com>

pkg/storage/secret/metadata/secure_value_model.go

@@ -122,18 +122,18 @@ func (sv *secureValueDB) toKubernetes() (*secretv1beta1.SecureValue, error) {
 }
 
 // toCreateRow maps a Kubernetes resource into a DB row for new resources being created/inserted.
-func toCreateRow(sv *secretv1beta1.SecureValue, actorUID string) (*secureValueDB, error) {
+func toCreateRow(now time.Time, sv *secretv1beta1.SecureValue, actorUID string) (*secureValueDB, error) {
 	row, err := toRow(sv, "")
 	if err != nil {
 		return nil, fmt.Errorf("failed to convert SecureValue to secureValueDB: %w", err)
 	}
 
-	now := time.Now().UTC().Unix()
+	timestamp := now.UTC().Unix()
 
 	row.GUID = uuid.New().String()
-	row.Created = now
+	row.Created = timestamp
 	row.CreatedBy = actorUID
-	row.Updated = now
+	row.Updated = timestamp
 	row.UpdatedBy = actorUID
 
 	return row, nil