CoreOS Cloud-Init with host access and etcd tokens only

coreos-cloud-init-host-access-only

#cloud-config
ssh_authorized_keys:
  - ssh-rsa AAAAB3NzaC1yc2EAAAADAQAB ...snip... QAyapHGwoBvkq7nNp
coreos:
  etcd:
      # via https://discovery.etcd.io/new
      discovery: https://discovery.etcd.io/7028e012ca66ef0121b64c19c40a425a
      addr: $private_ipv4:4001
      peer-addr: $private_ipv4:7001
write_files:
  - content: |
      ssh-rsa AAAAB3NzaC1yc2EAAAADAQAB ...snip... QAyapHGwoBvkq7nNp
    path: /home/core/.ssh/shared.pub
    permissions: '0600'
    owner: core:core
  - content: |
      -----BEGIN RSA PRIVATE KEY-----
      MIIEowIBAAKCAQEAsjvCcWeXSpB2EvTvxsyMHoA55BDcU/oP0Kr1QvgXGmw/PT/R
      8Nq/Hy8WBW8vlJGqlkClZqvJn7vE014G3a4otmJT087nA+ftfYc0g04GzBFzt05Q
      ... snip ...
      dWtYdrxBBuKUDmSqdHkGPJS/KErmVm2OWqPgiOMgae2s7QSrySX6VKRH/grV0DLh
      UYrPiHUruKX6rgEVjhzS55dKiN4XRk0N+CWYXq3mgmO5zV3rb4/u
      -----END RSA PRIVATE KEY-----
    path: /home/core/.ssh/shared
    permissions: '0600'
    owner: core:core