Merge pull request kubernetes#9316 from dippynark/handle-nil-replicas

feat(vpa): Handle null Deployment replicas fields in VerticalPodAutoscaler Helm chart

Author: k8s-ci-robot

vertical-pod-autoscaler/charts/vertical-pod-autoscaler/templates/admission-controller-deployment.yaml

@@ -14,7 +14,9 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
 spec:
-  replicas: {{ .Values.admissionController.replicas }}
+  {{- with .Values.admissionController.replicas }}
+  replicas: {{ . }}
+  {{- end }}
   revisionHistoryLimit: {{ .Values.admissionController.revisionHistoryLimit }}
   {{- with .Values.admissionController.updateStrategy }}
   strategy:

vertical-pod-autoscaler/charts/vertical-pod-autoscaler/templates/recommender-deployment.yaml

@@ -11,7 +11,9 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
 spec:
-  replicas: {{ .Values.recommender.replicas }}
+  {{- with .Values.recommender.replicas }}
+  replicas: {{ . }}
+  {{- end }}
   revisionHistoryLimit: {{ .Values.recommender.revisionHistoryLimit }}
   {{- with .Values.recommender.updateStrategy }}
   strategy:

vertical-pod-autoscaler/charts/vertical-pod-autoscaler/templates/updater-deployment.yaml

@@ -11,7 +11,9 @@ metadata:
     {{- toYaml . | nindent 4 }}
   {{- end }}
 spec:
-  replicas: {{ .Values.updater.replicas }}
+  {{- with .Values.updater.replicas }}
+  replicas: {{ . }}
+  {{- end }}
   revisionHistoryLimit: {{ .Values.updater.revisionHistoryLimit }}
   selector:
     matchLabels: