Replace use of `kustomize` with `kubectl` (#1080)
Replace use of `kustomize` with `kubectl` (#1080)

* Replace use of "kustomize" with "kubectl"

* Remove extra "kustomize"
GoogleCloudPlatform/microservices-demo,GoogleCloudPlatform/microservices-demo,GoogleCloudPlatform/microservices-demo,GoogleCloudPlatform/microservices-demo,GoogleCloudPlatform/microservices-demo,GoogleCloudPlatform/microservices-demo,GoogleCloudPlatform/microservices-demo