chore: e2e tests validate the alz module installs latest terraform or…

… upgrades 1.5 (#64)

<!-- Thank you for submitting a Pull Request. Please fill out the
template below.-->
## Overview/Summary

Updates the end to end tests for provide more comprehensive coverage of
Terraform CLI install and upgrade process with ALZ PowerShell module

## This PR fixes/adds/changes/removes

N/A

### Breaking Changes

None

## Testing Evidence

End to end tests should pass.

## As part of this Pull Request I have

- [x] Checked for duplicate [Pull
Requests](https://github.com/Azure/alz-terraform-accelerator/pulls)
- [x] Associated it with relevant
[issues](https://github.com/Azure/alz-terraform-accelerator/issues), for
tracking and closure.
- [x] Ensured my code/branch is up-to-date with the latest changes in
the `main`
[branch](https://github.com/Azure/alz-terraform-accelerator/tree/main)
- [x] Performed testing and provided evidence.
- [x] Updated relevant and associated documentation.

.github/workflows/end-to-end-test.yml

@@ -22,7 +22,7 @@ jobs:
       fail-fast: false
       matrix:
         operatingSystem: ['ubuntu-latest', 'windows-latest', 'macos-latest']
-        terraform_version: ['latest', '1.6.0']
+        terraform_version: ['latest', '1.5.0']
         versionControlSystem: ['github', 'azuredevops']
         authScheme: ['ManagedServiceIdentity', 'WorkloadIdentityFederation']
         exclude:
@@ -42,6 +42,7 @@ jobs:
         with:
           terraform_version: ${{ matrix.terraform_version }}
           terraform_wrapper: false
+        if: ${{ matrix.terraform_version != 'latest' }}
 
       - name: Setup ALZ Module Inputs
         run: |
@@ -158,6 +159,13 @@ jobs:
           ARM_CLIENT_ID: ${{ vars.ARM_CLIENT_ID }}
           ARM_USE_OIDC: true
 
+      - name: Setup Terraform
+        uses: hashicorp/setup-terraform@v2
+        with:
+          terraform_version: "latest"
+          terraform_wrapper: false
+        if: always()
+
       - name: Run Terraform Destroy to Clean Up
         if: always()
         run: |