Overriding nginx default maxunavailable

Signed-off-by: Rajesh Rajendran <rjshrjndrn@gmail.com>

kubernetes/helm_charts/core/nginx-public-ingress/templates/daemonset.yaml

@@ -7,6 +7,11 @@ metadata:
   annotations:
     reloader.stakater.com/auto: "true"
 spec:
+  updateStrategy:
+    type: RollingUpdate
+    rollingUpdate:
+      maxSurge: {{ .Values.strategy.maxsurge }}
+      maxUnavailable: {{ .Values.strategy.maxunavailable }}
   selector:
     matchLabels:
       app: nginx-public-ingress

kubernetes/helm_charts/core/nginx-public-ingress/values.j2

 #jinja2:lstrip_blocks: True
 
+strategy:
+  type: RollingUpdate
+  maxsurge: {{ nginx_maxsurge|default('25%') }}
+  maxunavailable: {{ nginx_maxunavailable|default('25%') }}
+
 namespace: {{ namespace }}
 merge_domain_status: {{ merge_domain_status | lower }}
 service: