feat: add spec.revisionHistoryLimit to deployment.yaml template (#382)

Author: HakimHC

charts/pihole/templates/deployment.yaml

@@ -14,6 +14,9 @@ metadata:
   {{- end }}
 spec:
   replicas: {{ .Values.replicaCount }}
+  {{- if .Values.revisionHistoryLimit }}
+  revisionHistoryLimit: {{ .Values.revisionHistoryLimit }}
+  {{- end }}
   strategy:
     type: {{ .Values.strategyType }}
     {{- if eq .Values.strategyType "RollingUpdate" }}

charts/pihole/values.yaml

@@ -14,6 +14,9 @@ maxSurge: 1
 # -- The maximum number of Pods that can be unavailable during updating
 maxUnavailable: 1
 
+# -- The number of old ReplicaSets to retain to allow rollback
+revisionHistoryLimit: 10
+
 image:
   # -- the repostory to pull the image from
   repository: "pihole/pihole"