evaluate ansible and choice of dns

[rtang03]

After watching the introduction of Blockchain Automation Framework, it leverages ansible to do orchestration over helm. That sounds good approach. Should further evaluate it.

Also, need to figure how to implement dns properly

[rtang03]

Ansible is not required. Instead, will use FluxCD

Currently, there is no need for external DNS. However, use use GCP private zone DNS, if later found necessary.

The GCP L7 LB can do routing, based on requesting URL, and its tlsca cert. This is a pretty nice and simple solution.