fix(helm): apply imagePullPolicy to controller container and promtail sidecar (#4002)

Signed-off-by: geekspeng <geekspeng@icloud.com>
Co-authored-by: Claude Opus 4.7 <noreply@anthropic.com>

helm/core/templates/_pod.tpl

@@ -211,7 +211,9 @@ template:
         {{- $config := $o11y.promtail }}
       - name: promtail
         image: {{ $config.image.repository | default (printf "%s/higress/promtail" .Values.global.hub) }}:{{ $config.image.tag }}
-        imagePullPolicy: IfNotPresent
+        {{- if .Values.global.imagePullPolicy }}
+        imagePullPolicy: {{ .Values.global.imagePullPolicy }}
+        {{- end }}
         args:
           - -config.file=/etc/promtail/promtail.yaml
         env:

helm/core/templates/controller-deployment.yaml

@@ -39,6 +39,11 @@ spec:
           securityContext:
             {{- toYaml .Values.controller.securityContext | nindent 12 }}
           image: "{{ .Values.controller.hub | default .Values.global.hub }}/higress/{{ .Values.controller.image | default "higress" }}:{{ .Values.controller.tag | default .Chart.AppVersion }}"
+          {{- if .Values.controller.imagePullPolicy }}
+          imagePullPolicy: {{ .Values.controller.imagePullPolicy }}
+          {{- else if .Values.global.imagePullPolicy }}
+          imagePullPolicy: {{ .Values.global.imagePullPolicy }}
+          {{- end }}
           args:
           - "serve"
           - --gatewaySelectorKey=higress