Fix minor bugs in enforcer script
Fix minor bugs in enforcer script

GoogleCloudPlatform/repo-automation-playground,GoogleCloudPlatform/repo-automation-playground,GoogleCloudPlatform/repo-automation-playground,GoogleCloudPlatform/repo-automation-playground,GoogleCloudPlatform/repo-automation-playground,GoogleCloudPlatform/repo-automation-playground,GoogleCloudPlatform/repo-automation-playground,GoogleCloudPlatform/repo-automation-playground,GoogleCloudPlatform/repo-automation-playground