PDB fix with HPA enabled (#341)

* PDB fix with HPA enabled

Fixes #309

* Update Chart.yaml

* Fixed the type mismatch with a cast

Author: pierluigilenoci

helm/oauth2-proxy/Chart.yaml

@@ -1,5 +1,5 @@
 name: oauth2-proxy
-version: 8.1.0
+version: 8.1.1
 apiVersion: v2
 appVersion: 7.12.0
 home: https://oauth2-proxy.github.io/oauth2-proxy/
@@ -31,8 +31,8 @@ maintainers:
 kubeVersion: ">=1.16.0-0"
 annotations:
   artifacthub.io/changes: |
-    - kind: changed
-      description: Updated OAuth2-Proxy image to v7.12.0
+    - kind: fixed
+      description: Fixed the Pod Disruption Budget when Horizontal Pod Autoscaling is enabled
       links:
         - name: Github PR
-          url: https://github.com/oauth2-proxy/manifests/pull/340
+          url: https://github.com/oauth2-proxy/manifests/pull/341

helm/oauth2-proxy/templates/poddisruptionbudget.yaml

@@ -1,4 +1,8 @@
-{{- if and .Values.podDisruptionBudget.enabled (gt (.Values.replicaCount | int) 1) }}
+{{- $replicaCount := .Values.replicaCount | default 1 | int }}
+{{- if .Values.autoscaling.enabled }}
+  {{- $replicaCount = .Values.autoscaling.minReplicas | default 1 | int }}
+{{- end }}
+{{- if and .Values.podDisruptionBudget.enabled (gt $replicaCount 1) }}
 apiVersion: {{ include "capabilities.podDisruptionBudget.apiVersion" . }}
 kind: PodDisruptionBudget
 metadata: