Add Grafana ingress Terraform module with ALB, DNS, and ACM cert

[iamkirkbater]

Adds an ingress and DNS for grafana, and wires up the correct config to use the SSO.

[coderabbitai]

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Path: .coderabbit.yaml

Review profile: CHILL

Plan: Enterprise

Run ID: 817b1b67-4761-4c53-87a0-0812ec25558c

📥 Commits

Reviewing files that changed from the base of the PR and between 337be0f and 2b6af78.

📒 Files selected for processing (30)

• argocd/config/regional-cluster/grafana/templates/auth-anonymous.yaml
• argocd/config/regional-cluster/grafana/templates/auth-sso.yaml
• argocd/config/regional-cluster/grafana/templates/sso-external-secret.yaml
• argocd/config/regional-cluster/grafana/templates/targetgroupbinding.yaml
• argocd/config/regional-cluster/grafana/values.yaml
• config/defaults.yaml
• config/integration/defaults.yaml
• config/templates/argocd-bootstrap/applicationset.yaml.j2
• config/templates/pipeline-regional-cluster-inputs/terraform.json.j2
• deploy/ephemeral/us-east-1/_merged_config.yaml
• deploy/ephemeral/us-east-1/argocd-bootstrap-management-cluster/applicationset.yaml
• deploy/ephemeral/us-east-1/argocd-bootstrap-regional-cluster/applicationset.yaml
• deploy/ephemeral/us-east-1/pipeline-regional-cluster-inputs/terraform.json
• deploy/integration/us-east-1/_merged_config.yaml
• deploy/integration/us-east-1/argocd-bootstrap-management-cluster/applicationset.yaml
• deploy/integration/us-east-1/argocd-bootstrap-regional-cluster/applicationset.yaml
• deploy/integration/us-east-1/pipeline-regional-cluster-inputs/terraform.json
• docs/environment-provisioning.md
• scripts/bootstrap-argocd.sh
• terraform/config/regional-cluster/main.tf
• terraform/config/regional-cluster/outputs.tf
• terraform/config/regional-cluster/variables.tf
• terraform/modules/ecs-bootstrap/main.tf
• terraform/modules/grafana-ingress/acm.tf
• terraform/modules/grafana-ingress/dns.tf
• terraform/modules/grafana-ingress/main.tf
• terraform/modules/grafana-ingress/outputs.tf
• terraform/modules/grafana-ingress/security-groups.tf
• terraform/modules/grafana-ingress/variables.tf
• terraform/modules/grafana-ingress/versions.tf

✨ Finishing Touches

🧪 Generate unit tests (beta)

• Create PR with unit tests

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