Comment 1 for bug 1785569

From: https://github.com/rabbitmq/rabbitmq-clusterer#cluster-configuration

version: non negative integer

All configs are versioned and this is used to decide which of any two configs is the youngest. A config which has a smaller version number is older. Configs will be ignored unless they are younger than the current config. Note that in lieu of any config being provided by the user, the default config is used which has a version of 0. Thus user supplied configs should use a version of 1 or greater.