[zookeeper] Fix zookeeper download link in tests (#1079)
[zookeeper] Fix zookeeper download link in tests (#1079)


GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy,GoogleCloudPlatform/click-to-deploy