salt/minion/cert/proxy/init.yml

parameters:
  _param:
    salt_minion_ca_authority: salt_master_ca
  salt:
    minion:
      cert:
        proxy:
          host: ${_param:salt_minion_ca_host}
          signing_policy: cert_server
          authority: ${_param:salt_minion_ca_authority}
          common_name: ${_param:cluster_public_host}