Unable to scale-up master or etcd node due to missing ca.crt file

Issue

Master or etcd scale-ups are failing due to:

fatal: [node02.example.com]: FAILED! => {"changed": false, "failed": true, "msg": "CA certificate /etc/etcd/ca/ca.crt doesn't exist on CA host node02.example.com. Apply 'etcd_ca' action from `etcd` role to node02.example.com.\n"}