[stable/prometheus] Remove unnecessary reclaim policy (helm#9471)

persistentVolumeReclaimPolicy is unnecessary for PVC, so let's
remove it.

Signed-off-by: OTSUKA, Yuanying <mototsuk@zlab.co.jp>
Signed-off-by: Chaoran Yu <yuchaoran2011@gmail.com>

stable/prometheus/Chart.yaml

@@ -1,5 +1,5 @@
 name: prometheus
-version: 7.4.4
+version: 7.4.5
 appVersion: 2.5.0
 description: Prometheus is a monitoring system and time series database.
 home: https://prometheus.io/

stable/prometheus/README.md

@@ -246,7 +246,6 @@ Parameter | Description | Default
 `server.persistentVolume.annotations` | Prometheus server data Persistent Volume annotations | `{}`
 `server.persistentVolume.existingClaim` | Prometheus server data Persistent Volume existing claim name | `""`
 `server.persistentVolume.mountPath` | Prometheus server data Persistent Volume mount root path | `/data`
-`server.persistentVolume.reclaimPolicy` | Prometheus server data Persistent Volume reclaim policy | `Retain`
 `server.persistentVolume.size` | Prometheus server data Persistent Volume size | `8Gi`
 `server.persistentVolume.storageClass` | Prometheus server data Persistent Volume Storage Class |  `unset`
 `server.persistentVolume.subPath` | Subdirectory of Prometheus server data Persistent Volume to mount | `""`

stable/prometheus/templates/server-pvc.yaml

@@ -24,7 +24,6 @@ spec:
   storageClassName: "{{ .Values.server.persistentVolume.storageClass }}"
 {{- end }}
 {{- end }}
-  persistentVolumeReclaimPolicy: {{ .Values.server.persistentVolume.reclaimPolicy | quote }}
   resources:
     requests:
       storage: "{{ .Values.server.persistentVolume.size }}"

stable/prometheus/values.yaml

@@ -651,12 +651,6 @@ server:
     ##
     subPath: ""
 
-    ## reclaimPolicy for the persistent volume.
-    ## See https://kubernetes.io/docs/tasks/administer-cluster/change-pv-reclaim-policy/
-    ## Can be Retain, Recycle, or Delete
-    ##
-    reclaimPolicy: Retain
-
   ## Annotations to be added to Prometheus server pods
   ##
   podAnnotations: {}