Add mutating webhook for postgresAutoscaler (#544)

Signed-off-by: Arnob kumar saha <arnob@appscode.com>

Signed-off-by: Arnob kumar saha <arnob@appscode.com>

Author: ArnobKumarSaha

charts/kubedb-webhook-server/templates/autoscaler/mutating-webhook.yaml

@@ -86,6 +86,21 @@ webhooks:
   admissionReviewVersions: ["v1beta1"]
   failurePolicy: Fail
   sideEffects: None
+- name: postgresautoscalerwebhook.mutators.autoscaling.kubedb.com
+  clientConfig:
+    service:
+      namespace: default
+      name: kubernetes
+      path: /apis/mutators.autoscaling.kubedb.com/v1alpha1/postgresautoscalerwebhooks
+    caBundle: {{ $caCrt }}
+  rules:
+    - apiGroups: ["autoscaling.kubedb.com"]
+      apiVersions: ["*"]
+      resources: ["postgresautoscalers"]
+      operations: ["CREATE", "UPDATE"]
+  admissionReviewVersions: ["v1beta1"]
+  failurePolicy: Fail
+  sideEffects: None
 - name: pgbouncerautoscalerwebhook.mutators.autoscaling.kubedb.com
   clientConfig:
     service: