prow/plank/controller.go
func (c *Controller) SyncMetrics() {
	c.pjLock.RLock()
	defer c.pjLock.RUnlock()
	kube.GatherProwJobMetrics(c.pjs)
}
func (c *Controller) SyncMetrics() {
	c.pjLock.RLock()
	defer c.pjLock.RUnlock()
	kube.GatherProwJobMetrics(c.pjs)
}
// SyncMetrics records metrics for the cached prowjobs.