Add roger resources

One task that ai-bs does is to set the status in roger. We could implement a set of resources to interact with roger.

Something similar to:

resource "cern_roger_state" "vm" {
  hostname => "machine.cern.ch"
  appstate => "production",
  message  => "Terraformed machine",
  alarms   => {
    app        = true,
    no_contact = true,
    os         = true,
    hw         = false,
  }
  expires  => "",
}