This Ansible role installs the zerotier-one package from Zerotier's yum repo, adds and authorizes new members to (existing) Zerotier network and tells the new members to join the network.
This roles requires an access token for the Zerotier API. This enables the role to add new members to a private network and authorizes them. Also, the role needs the network ID of the Zerotier network the new members should join.