Automatic merge from submit-queue (batch tested with PRs 52442, 52247, 46542, 52363, 51781)
Make CPU manager release CPUs when Pod enters completed phase.
**What this PR does / why we need it**: When CPU manager is enabled, this PR releases allocated CPUs when container is not running and is non-restartable.
**Which issue this PR fixes** *(optional, in `fixes #<issue number>(, fixes #<issue_number>, ...)` format, will close that issue when PR gets merged)*: fixes#52351
**Special notes for your reviewer**:
This bug is only reproduced for pods with `restartPolicy` = `Never` or `OnFailure`. The following output is from a 4 CPU node. This bug can be reproduced as long >= half the cores are requested.
pod1.yaml:
```
apiVersion: v1
kind: Pod
metadata:
name: test-pod1
spec:
containers:
- image: ubuntu
command: ["/bin/bash"]
args: ["-c", "sleep 5"]
name: test-container1
resources:
requests:
cpu: 2
memory: 100Mi
limits:
cpu: 2
memory: 100Mi
restartPolicy: "Never"
```
pod2.yaml:
```
apiVersion: v1
kind: Pod
metadata:
name: test-pod2
spec:
containers:
- image: ubuntu
command: ["/bin/bash"]
args: ["-c", "sleep 5"]
name: test-container1
resources:
requests:
cpu: 2
memory: 100Mi
limits:
cpu: 2
memory: 100Mi
restartPolicy: "Never"
```
Run a local Kubernetes cluster with CPU manager enabled.
```sh
KUBELET_FLAGS='--feature-gates=CPUManager=true --cpu-manager-policy=static --cpu-manager-reconcile-period=1s --kube-reserved=cpu=500m' ./hack/local-up-cluster.sh
```
_Before:_
Create `test-pod1` using pod1.yaml.
```
./cluster/kubectl.sh create -f pod1.yaml
```
Wait for the pod to complete and wait another 90 seconds (give enough time for GC to kick-in).
Create `test-pod2` using pod2.yaml.
```
./cluster/kubectl.sh create -f pod2.yaml
```
Get all pods in the cluster.
```
./cluster/kubectl.sh get pods -a
NAME READY STATUS RESTARTS AGE
test-pod1 0/1 Completed 0 1m
test-pod2 0/1 not enough cpus available to satisfy request 0 9s
```
_After:_
Create `test-pod1` using pod1.yaml.
```
./cluster/kubectl.sh create -f pod1.yaml
```
Wait for the pod to complete and wait another 90 seconds (give enough time for GC to kick-in).
Create `test-pod2` using pod2.yaml.
```
./cluster/kubectl.sh create -f pod2.yaml
```
Get all pods in the cluster.
```
./cluster/kubectl.sh get pods -a
NAME READY STATUS RESTARTS AGE
test-pod1 0/1 Completed 0 1m
test-pod2 0/1 Completed 0 9s
```
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