func GCEUpgradeScript() string
GCEUpgradeScript returns path of script for upgrading on GCE.
func LocationParamGKE() string
LocationParamGKE returns parameter related to location for gcloud command.
func MasterUpgradeGKE(ctx context.Context, namespace string, v string) error
MasterUpgradeGKE upgrades master node to the specified version on GKE.