Allow to configure revisionHistoryLimit on the K8s Deployment resource

Signed-off-by: Arnold Bechtoldt <mail@arnoldbechtoldt.com>

Author: arnisoph

charts/external-dns/templates/deployment.yaml

@@ -16,6 +16,9 @@ spec:
       {{- include "external-dns.selectorLabels" . | nindent 6 }}
   strategy:
     {{- toYaml .Values.deploymentStrategy | nindent 4 }}
+  {{- with .Values.revisionHistoryLimit }}
+  revisionHistoryLimit: {{ . }}
+  {{- end }}
   template:
     metadata:
       labels:

charts/external-dns/values.yaml

@@ -197,5 +197,8 @@ secretConfiguration:
 deploymentStrategy:
   type: Recreate
 
+# Optional field that specifies the number of old ReplicaSets to retain to allow rollback with the Deployment.
+revisionHistoryLimit:
+
 # opt out of the service account token automounting (at the pod level)
 automountServiceAccountToken: