fix(hpa) Add autoscaling v2 support (#152)

* feat(env-vars) Add extra env vars and envFrom

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* fix(hpa) Add autoscaling v2 support

chart/templates/hpa.yaml

@@ -1,6 +1,12 @@
 {{- if not .Values.useStatefulset.enabled -}}
 {{- if .Values.autoscaling.enabled }}
+{{- if .Capabilities.APIVersions.Has "autoscaling/v2" }}
+apiVersion: autoscaling/v2
+{{- else if .Capabilities.APIVersions.Has "autoscaling/v2beta2" }}
+apiVersion: autoscaling/v2beta2
+{{- else }}
 apiVersion: autoscaling/v2beta1
+{{- end }}
 kind: HorizontalPodAutoscaler
 metadata:
   name: {{ include "kube-httpcache.fullname" . }}
@@ -18,13 +24,25 @@ spec:
     - type: Resource
       resource:
         name: cpu
+        {{- if or (.Capabilities.APIVersions.Has "autoscaling/v2") (.Capabilities.APIVersions.Has "autoscaling/v2beta2") }}
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+        {{- else }}
         targetAverageUtilization: {{ .Values.autoscaling.targetCPUUtilizationPercentage }}
+        {{- end }}
   {{- end }}
   {{- if .Values.autoscaling.targetMemoryUtilizationPercentage }}
     - type: Resource
       resource:
         name: memory
+        {{- if or (.Capabilities.APIVersions.Has "autoscaling/v2") (.Capabilities.APIVersions.Has "autoscaling/v2beta2") }}
+        target:
+          type: Utilization
+          averageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+        {{- else }}
         targetAverageUtilization: {{ .Values.autoscaling.targetMemoryUtilizationPercentage }}
+        {{- end }}
   {{- end }}
 {{- end }}
 {{- end }}