koord-scheduler: retrieve reservationInfo from cache first in preFilter hook

[KunWuLuan]

fix: prefilter hook get stale reservation from indexer

currently prefilter hook of resource reservation will list reservations from informer cache and construct reservationInfo to judge whether the pod match the reservation(https://github.com/koordinator-sh/koordinator/blob/main/pkg/scheduler/plugins/reservation/hook.go#L147):

		rOnNode, err := indexer.ByIndex(NodeNameIndex, node.Name)
		if err != nil {
			klog.V(3).InfoS("PreFilterHook failed to list reservations",
				"node", node.Name, "index", NodeNameIndex, "err", err)
			return
		}
		klog.V(6).InfoS("PreFilterHook indexer list reservation on node",
			"node", node.Name, "count", len(rOnNode))
		count := 0
		for _, obj := range rOnNode {
			r, ok := obj.(*schedulingv1alpha1.Reservation)
			if !ok {
				klog.V(5).Infof("unable to convert to *schedulingv1alpha1.Reservation, obj %T", obj)
				continue
			}
			// only count available reservations, ignore succeeded ones
			if !util.IsReservationAvailable(r) {
				continue
			}
			if matchReservation(pod, newReservationInfo(r)) {
				matchedCache.Add(r)
				count++
			} else {
				klog.V(6).InfoS("got reservation on node does not match the pod",
					"reservation", klog.KObj(r), "pod", klog.KObj(pod), "reason",
					dumpMatchReservationReason(pod, newReservationInfo(r)))
			}
		}

However, reservations in informer cache can be stale because in pervious cycles pods can have reserve the resouce of the reservation, which leads to a failed scheduling of the pod:

$ k get event | grep busybox-deployment-basic-58868685fc-vk92n
8m54s       Warning   FailedScheduling    pod/busybox-deployment-basic-58868685fc-vk92n    running Reserve plugin "Reservation": reservation is stale and does not match any more

How to reproduce：
A reservation with label selector ownership and a deployment:

apiVersion: scheduling.koordinator.sh/v1alpha1
kind: Reservation
metadata:
  name: reservation-demo1
spec:
  # allocateOnce: true
  template: # set resource requirements
    namespace: default
    spec:
      containers:
        - resources:
            requests:
              cpu: 100m
              memory: 100Mi
      schedulerName: koord-scheduler # use koord-scheduler
  owners: # set the owner specifications
    - labelSelector:
        matchLabels:
          app: test
  ttl: 1h # set the TTL, the reservation will get expired 1 hour later
---
apiVersion: apps/v1 # for versions before 1.8.0 use apps/v1beta1
kind: Deployment
metadata:
  name: busybox-deployment-basic
  labels:
    app: busybox
spec:
  replicas: 2
  selector:
    matchLabels:
      app: test
  template:
    metadata:
      labels:
        app: test
    spec:
      schedulerName: koord-scheduler
    #  nodeSelector:
    #    env: test-team
      containers:
      - name: busybox
        image: busybox
        command: ["sleep", "1d"]
        ports:
        - containerPort: 80
        resources:
          limits:
            cpu: "100m"
            memory: "100Mi"

[codecov]

Codecov Report

Base: 66.63% // Head: 66.65% // Increases project coverage by +0.01% 🎉

Coverage data is based on head (afbf4b8) compared to base (0a02d28).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #906      +/-   ##
==========================================
+ Coverage   66.63%   66.65%   +0.01%     
==========================================
  Files         238      238              
  Lines       27675    27682       +7     
==========================================
+ Hits        18442    18451       +9     
- Misses       7965     7967       +2     
+ Partials     1268     1264       -4     

Flag	Coverage Δ
unittests	66.65% <100.00%> (+0.01%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Impacted Files	Coverage Δ
pkg/scheduler/plugins/reservation/hook.go	79.16% <100.00%> (+0.63%)	⬆️
pkg/scheduler/plugins/reservation/plugin.go	80.83% <100.00%> (ø)
pkg/scheduler/plugins/reservation/rcache.go	89.16% <100.00%> (+0.09%)	⬆️
pkg/util/httputil/reverseproxy.go	84.84% <0.00%> (+0.53%)	⬆️

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[eahydra]

@saintube please review the PR

[eahydra]

/milestone v1.2

[saintube]

/lgtm

[eahydra]

/lgtm
/approve

[koordinator-bot]

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