scaffold: make pdb configurable (#363)

* scaffold: make pdb configurable

* scaffold: fix typo

Author: cbarbian-sap

scaffold/templates/chart/templates/pdb.yaml.tpl

@@ -1,14 +1,27 @@
 {{- $operator := (splitList "." .operatorName | first) -}}
+{{`{{`}}- if .Values.pdb.enabled {{`}}`}}
 {{`{{`}}- if ge (int .Values.replicaCount) 2 {{`}}`}}
 apiVersion: policy/v1
 kind: PodDisruptionBudget
 metadata:
   name: {{`{{`}} include "{{ $operator }}.fullname" . {{`}}`}}
+  {{`{{`}}- with .Values.pdb.annotations {{`}}`}}
+  annotations:
+    {{`{{`}}- toYaml . | nindent 4 {{`}}`}}
+  {{`{{`}}- end {{`}}`}}
   labels:
     {{`{{`}}- include "{{ $operator }}.labels" . | nindent 4 {{`}}`}}
+    {{`{{`}}- with .Values.pdb.labels {{`}}`}}
+    {{`{{`}}- toYaml . | nindent 4 {{`}}`}}
+    {{`{{`}}- end {{`}}`}}
 spec:
-  minAvailable: 1
+  {{`{{`}}- if .Values.pdb.maxUnavailable {{`}}`}}
+  maxUnavailable: {{`{{`}} .Values.pdb.maxUnavailable {{`}}`}}
+  {{`{{`}}- else }}
+  minAvailable: {{`{{`}} .Values.pdb.minAvailable {{`}}`}}
+  {{`{{`}}- end {{`}}`}}
   selector:
     matchLabels:
       {{`{{`}}- include "{{ $operator }}.selectorLabels" . | nindent 6 {{`}}`}}
 {{`{{`}}- end {{`}}`}}
+{{`{{`}}- end {{`}}`}}

scaffold/templates/chart/values.yaml.tpl

@@ -62,6 +62,18 @@ resources:
     # -- Memory request
     memory: 128Mi
 
+pdb:
+  # -- Whether to create a PodDisruptionBudget for the webhook
+  enabled: true
+  # -- Labels to set on the PodDisruptionBudget
+  labels: {}
+  # -- Annotations to set on the PodDisruptionBudget
+  annotations: {}
+  # -- Number of pods that are available after eviction as number or percentage (e.g. 50%)
+  minAvailable: "1"
+  # -- Number of pods that are unavailable after eviction as number or percentage (e.g: 50%); has higher precedence over `pdb.minAvailable`
+  maxUnavailable: ""
+
 {{- if or .validatingWebhookEnabled .mutatingWebhookEnabled }}
 
 service: