Feature: Add DNS Entry Creation and Terraform IAM Service Account Provisioning

Overview

This MR is a combination of !166 (merged) and !167 (merged) in order to prevent any merge conflicts that would be presented during merging to main.

New Features

• Create DNS subdomain and managed zone for each Cloud Account Environment
  • Issue #19 (closed)
• Add terraform-ci IAM Service Account provisioning and role mapping for each Cloud Account Environment
  • Issue #92 (closed)

Breaking Changes

• TODO

Limitations

• TODO