title: Add SNS Filter Policy via Terraform
body: <p>I have created an SNS topic and there are several other services subscribed to this topic to receive notifications.</p>
  
  <p>Now, my requirement is to add a filter policy so that only the services that meet the requirement receive the message.</p>
  
  <p>There is support for delivery_policy on terraform, but unable to use filter_policy on SNS.tf directly.</p>
  
  <p>Please suggest if there is any alternative or correct me if my approach is wrong.</p>
  
  <p>PS: I have to do this using terraform and not from AWS console</p>
  
  <p>Thanks,
  Sumukha</p>