Add support for multiple subscribers to CRI container events

Signed-off-by: Derek McGowan <derek@mcg.dev>

pkg/cri/server/helpers.go

@@ -395,13 +395,7 @@ func (c *criService) generateAndSendContainerEvent(ctx context.Context, containe
 		ContainersStatuses: containerStatuses,
 	}
 
-	// TODO(ruiwen-zhao): write events to a cache, storage, or increase the size of the channel
-	select {
-	case c.containerEventsChan <- event:
-	default:
-		containerEventsDroppedCount.Inc()
-		log.G(ctx).Debugf("containerEventsChan is full, discarding event %+v", event)
-	}
+	c.containerEventsQ.Send(event)
 }
 
 func (c *criService) getPodSandboxStatus(ctx context.Context, podSandboxID string) (*runtime.PodSandboxStatus, error) {