feat: support container resize policy for runtime resource updates

Add resizePolicy option to allow in-place pod resource updates
without restart (beta and enabled by default in Kubernetes 1.33+)

Ref: https://kubernetes.io/docs/tasks/configure-pod-container/resize-container-resources/

Author: younsl

helm/oauth2-proxy/templates/deployment.yaml

@@ -285,6 +285,10 @@ spec:
 {{- end }}
         resources:
 {{ toYaml .Values.resources | indent 10 }}
+{{- if .Values.resizePolicy }}
+        resizePolicy:
+{{ toYaml .Values.resizePolicy | indent 10 }}
+{{- end }}
         volumeMounts:
 {{- with .Values.config.google }}
 {{- if and .adminEmail (or .serviceAccountJson .existingSecret) }}

helm/oauth2-proxy/values.yaml

@@ -215,6 +215,14 @@ resources:
   #   cpu: 100m
   #   memory: 300Mi
 
+# Container resize policy for runtime resource updates
+# Ref: https://kubernetes.io/docs/tasks/configure-pod-container/resize-container-resources/
+resizePolicy: []
+  # - resourceName: cpu
+  #   restartPolicy: NotRequired
+  # - resourceName: memory
+  #   restartPolicy: RestartContainer
+
 extraVolumes:
   []
   # - name: ca-bundle-cert