[stable/memcached] upgrade metrics exporter, fix PDB (#18387)

Signed-off-by: David J. M. Karlsen <david@davidkarlsen.com>

stable/memcached/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: memcached
-version: 3.0.2
+version: 3.0.3
 appVersion: 1.5.19
 description: Free & open source, high-performance, distributed memory object caching
   system.

stable/memcached/templates/pdb.yaml

@@ -2,6 +2,9 @@ apiVersion: policy/v1beta1
 kind: PodDisruptionBudget
 metadata:
   name: {{ template "memcached.fullname" . }}
+  annotations:
+    helm.sh/hook: "post-upgrade, post-install"
+    helm.sh/hook-delete-policy: "before-hook-creation"
   labels:
     app: {{ template "memcached.fullname" . }}
     chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"

stable/memcached/values.yaml

@@ -79,7 +79,7 @@ metrics:
   enabled: false
 
   ## Memcached exporter image and tag
-  image: quay.io/prometheus/memcached-exporter:v0.4.1
+  image: quay.io/prometheus/memcached-exporter:v0.6.0
 
   ## Specify a imagePullPolicy
   ## 'Always' if imageTag is 'latest', else set to 'IfNotPresent'