etcd_cacert_file

raw details (from release v2.2.3):

{
  "name": "etcd_cacert_file",
  "long": "etcd-cacert-file",
  "required_if": "tower_storage\", \"etcd",
  "value_name": "FILE",
  "takes_value": "true",
  "help": "verify the TLS certificate of the etcd endpoint using this CA bundle"
}