Compose EKS monitoring modules (#115)

* Move modules around

* Update amp billing source

* Merge Java monitoring to EKS

* Update docs

* Merge nginx pattern

* Pre-commit

* Add save and test URL output

* Move EKS dependencies to EKS monitoring module

* update docs

* Update examples and docs

* Add java doc

* Add NGINX doc

* Update nginx doc

* Fix amp monitoring example path

* Fix pre-commit

* Todo: move to main after merge

* Update docs, fix tags

modules/managed-prometheus-monitoring/main.tf

@@ -0,0 +1,35 @@
+provider "aws" {
+  region = "us-east-1"
+  alias  = "billing_region"
+}
+
+locals {
+  name     = "aws-observability-accelerator-cloudwatch"
+  amp_list = toset(split(",", var.managed_prometheus_workspace_ids))
+}
+
+resource "grafana_data_source" "cloudwatch" {
+  type = "cloudwatch"
+  name = local.name
+
+  # Giving priority to Managed Prometheus datasources
+  is_default = false
+  json_data {
+    default_region  = var.aws_region
+    sigv4_auth      = true
+    sigv4_auth_type = "workspace-iam-role"
+    sigv4_region    = var.aws_region
+  }
+}
+
+resource "grafana_dashboard" "this" {
+  folder      = var.dashboards_folder_id
+  config_json = file("${path.module}/dashboards/amp-dashboard.json")
+}
+
+module "billing" {
+  source = "./billing"
+  providers = {
+    aws = aws.billing_region
+  }
+}