Update version constants for k8s 1.13 release snapshot
import sys
# Kubernetes branch to get the OpenAPI spec from.
-KUBERNETES_BRANCH = "release-1.12"
+KUBERNETES_BRANCH = "release-1.13"
# client version for packaging and releasing.
-CLIENT_VERSION = "8.0.0-snapshot"
+CLIENT_VERSION = "9.0.0-snapshot"
# Name of the release package
PACKAGE_NAME = "kubernetes"
