Support managing maintenance window

[lhull-exzeo]

We are using cloudamqp_instance to make our RabbitMQ cluster, however we have to manually update the maintenance window, anyway this be done thru Terraform?

Something like this

resource "cloudamqp_instance" "instance" {
  name    = "cloudamqp-instance"
  plan    = "lemur"

  maintenance_window {
    day = 0
    time = "00:00"
  }
}

or

resource "cloudamqp_maintenance_window" "instance" {
  instance_id    = cloudamqp_instance.instance.id

  maintenance_window_day = 0
  maintenance_window_time = "00:00"
}

[tbroden84]

Thanks for the request. In order to support this we also need to update our API backend. An internal ticket have been created for this and will be looked into.