RELOPS-2438 Import Azure template specs into Terraform

[jwmossmoz]

Summary

• Add AzAPI resources for the existing template-spec Template Specs in FXCI Azure and Trusted FXCI Azure.
• Add import blocks for all 13 Microsoft.Resources/templateSpecs and Microsoft.Resources/templateSpecs/versions resources.
• Check in the live mainTemplate bodies as JSON files referenced by the version resources.

Notes

• AzureRM currently exposes Template Spec versions as a data source, so this uses AzAPI for managed resources.
• Jira: https://mozilla-hub.atlassian.net/browse/RELOPS-2438
• Per request, I did not run any Terraform commands.

Validation

• jq empty terraform/azure_fxci/template_specs/*.json terraform/azure_trusted_fxci/template_specs/*.json
• git diff --check
• Checked Azure Resource Graph resource count against the new AzAPI resource/import block count: 13.

[jwmossmoz]

Applied the import blocks after review. Results:\n\n- terraform/azure_fxci: 9 imported, 0 added, 0 changed, 0 destroyed\n- terraform/azure_trusted_fxci: 4 imported, 0 added, 0 changed, 0 destroyed\n- Post-apply plans for both roots report: No changes. Your infrastructure matches the configuration.

[jwmossmoz]

Removed the completed Terraform import blocks after the imports were applied. Re-ran plans after removal:\n\n- terraform/azure_fxci: No changes\n- terraform/azure_trusted_fxci: No changes