Fix requests are sent to unready function pod (newdeploy) (#1005)

* Refactor specialization process
* Separate readiness and liveness probe to different routes

For newdeploy, readiness probe should check whether a fetcher specializes env container successfully or not. In this commit, fetcher returns the actual state of current specialization status instead of returning 200ok directly.

executor/reaper/reaper.go

@@ -137,7 +137,6 @@ func cleanupPods(client *kubernetes.Clientset, instanceId string) error {
 		return err
 	}
 	for _, pod := range podList.Items {
-		log.Printf("Clean pod: %v", pod.ObjectMeta.Name)
 		id, ok := pod.ObjectMeta.Labels[fission.EXECUTOR_INSTANCEID_LABEL]
 		if ok && id != instanceId {
 			log.Printf("Cleaning up pod %v", pod.ObjectMeta.Name)