Incubator - Upgrade Terraform to the latest version

[gjagnoor]

Dependency

• New Incubator terraform structure using PeopleDepot as initial #90

Overview

Since Terraform helps manage our entire infrastructure, it's important to make sure we are using a fixed version of terraform. Currently we do no specify the version, so the dflook github actions always use the latest version. This can lead to sudden, unexpected incompatibilities with our code and just be a bummer overall. Terraform upgrades should be tested, and not automatically run. We need to specify the exact terraform major and minor version we want to use, which at the time of this writing is 1.12.X

Action Items

• In backend.tf, add required_version = "~> 1.12.1" per the documentation listed below. The ~> symbol fixes the major and minor versions but allows patch versions.
• Update Incubator repository to work with the new version
• Confirm that terraform plan runs with the correct version when creating the pull request

Resources/Instructions

manage terraform versions

[JasonEb]

This will also have to reconcile terragrunt versioning. For the year, we had to rely on a specific terragrunt version. I do believe we have always used the latest terragrunt.

[ExperimentsInHonesty]

This issue needs a tiny bit of a rewrite. Let's talk about it at the next meeting on the 2022-11-09

[JasonEb]

After some discussion, we feel this issue would be better realized after Incubator Documentation contains guides about using Docker and Terragrunt.

Will put this it into the Icebox until we can revisit it.

[robinglov]

This issue needs to indicate what the version we're currently using is and point to a website where we can review any security updates to determine the time sensitivity of this issue.