feat(chart): add revisionHistoryLimit configuration (#24)

Add a configurable revisionHistoryLimit to the Deployment and set the
default to 10.

chart/templates/deployment.yaml

@@ -8,6 +8,7 @@ spec:
   {{- if not .Values.autoscaling.enabled }}
   replicas: {{ .Values.replicaCount }}
   {{- end }}
+  revisionHistoryLimit: {{ .Values.revisionHistoryLimit }}
   selector:
     matchLabels:
       {{- include "casecmp.selectorLabels" . | nindent 6 }}

chart/values.yaml

@@ -3,6 +3,7 @@
 # Declare variables to be passed into your templates.
 
 replicaCount: 1
+revisionHistoryLimit: 10
 
 image:
   repository: ghcr.io/jimeh/casecmp