prow/apis/prowjobs/v1/types.go
func (j *ProwJob) ClusterAlias() string {
	if j.Spec.Cluster == "" {
		return DefaultClusterAlias
	}
	return j.Spec.Cluster
}
func (j *ProwJob) ClusterAlias() string {
	if j.Spec.Cluster == "" {
		return DefaultClusterAlias
	}
	return j.Spec.Cluster
}
// ClusterAlias specifies the key in the clusters map to use.
//
// This allows scheduling a prow job somewhere aside from the default build cluster.