Chore/540 migrate terraform

[joshgamache]

Addresses #540 - Project link Adds Terraform scripts and Helm charts to run them. Resource states migrated from Terraform Cloud to a Google Cloud Storage bucket.

Changes 🚧

• Added Terraform module, imported from cas-shelf
• Added Helm templates to handle:
  • Terraform module loading to configMaps
  • OpenShift service account for use by Terraform
  • Terraform apply job

To test 🔬

• The Helm charts are built into the automation around deploys via ShipIt. Once a deploy has been run, you can check the job Terraform-apply in OpenShift to see if the run was successful.

Notes📝

• 🔒 Terraform Cloud state has been locked to enable migration of state to state buckets
• A script has been run and resources have been transitioned from Terraform Cloud to GCP buckets holding state for each namespace (ggircs-dev, ggircs-test, ggircs-prod).
• Resources have been migrated rather than recreated, only the state "owning" the resource changes.
• The resources kubernetes_secret.secret_sa have had Terraform changes, but only the addition of a default value (consistent with our use of them) due to a new provider version.
• Unlike other project's migrations, the one set of buckets created based on 'apps' are different between dev and test + prod, due to name length limits. This app is eccc-swrs-import in dev and swrs-import in test+prod.

[pbastia]

This one should also be refactored to use the chart instead, there's no real point in merging this work anymore