chore: add terraform.tfvars template

Author: USHER-PB

lgtm-stack/terraform/terraform.tfvars

@@ -0,0 +1,36 @@
+# GCP Configuration
+project_id       = "<PROJECT_ID>"
+region           = "<REGION>"
+cluster_name     = "<CLUSTER_NAME>"
+cluster_location = "<REGION>"
+
+# Kubernetes Configuration
+namespace                = "<NAMESPACE>"
+k8s_service_account_name = "<K8S_SERVICE_ACCOUNT_NAME>"
+gcp_service_account_name = "<GCP_SERVICE_ACCOUNT_NAME>"
+
+# Environment
+environment = "<ENVIRONMENT>"
+
+# Domain Configuration
+monitoring_domain = "<MONITORING_DOMAIN>"
+letsencrypt_email = "<LETS_ENCRYPT_EMAIL>"
+
+# Grafana
+grafana_admin_password = "<GRAFANA_ADMIN_PASSWORD>"
+
+# Helm Chart Versions (optional - defaults will be used if not specified)
+loki_version       = "6.20.0"
+mimir_version      = "5.5.0"
+tempo_version      = "1.57.0"
+prometheus_version = "25.27.0"
+grafana_version    = "10.3.0"
+
+# Optional Components (set to true if you want Terraform to install these)
+install_cert_manager  = false
+ingress_class_name    = "nginx"            # Set to your cluster's ingress class (e.g., "nginx", "traefik")
+cert_issuer_name      = "letsencrypt-prod" # Set to your Cert-Manager Issuer name
+install_nginx_ingress = false
+
+# Loki Schema From Date
+loki_schema_from_date = "2026-08-01"