Add example tfvars

Author: bonclay7

examples/existing-cluster-with-base-and-infra/terraform.tfvars

@@ -0,0 +1,14 @@
+# (mandatory) AWS Region where your resources will be located
+aws_region = ""
+
+# (mandatory) EKS Cluster name
+eks_cluster_id = ""
+
+# (optional) Leave it empty for a new workspace to be created
+managed_prometheus_workspace_id = ""
+
+# (mandatory) Amazon Managed Grafana Workspace ID: ex: g-abc123
+managed_grafana_workspace_id = ""
+
+# (mandatory) Grafana API Key - https://docs.aws.amazon.com/grafana/latest/userguide/API_key_console.html
+grafana_api_key = ""