mail-crypt: Do not restrict access in unit test

This works around problem with docker

src/plugins/mail-crypt/test-mail-key.c

@@ -151,6 +151,7 @@ int init_test_mail_user(void)
 	};
 
 	mail_storage_service = mail_storage_service_init(master_service, NULL,
+		MAIL_STORAGE_SERVICE_FLAG_NO_RESTRICT_ACCESS |
 		MAIL_STORAGE_SERVICE_FLAG_NO_LOG_INIT |
 		MAIL_STORAGE_SERVICE_FLAG_NO_PLUGINS);