Fix missing cloudsql empty directory.
Fix missing cloudsql empty directory.

GoogleCloudPlatform/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples,GoogleCloudPlatform/kubernetes-engine-samples,GoogleCloudPlatform/kubernetes-engine-samples,GoogleCloudPlatform/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples,GoogleCloudPlatform/kubernetes-engine-samples,GoogleCloudPlatform/kubernetes-engine-samples,GoogleCloudPlatform/kubernetes-engine-samples,GoogleCloudPlatform/kubernetes-engine-samples,GoogleCloudPlatform/kubernetes-engine-samples,mastersingh24/kubernetes-engine-samples