added prometheus and helm dependency with terraform

sandbox/.gitignore

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+# Terraform Files
+.terraform
+terraform.tfstate.d
+.terraform.lock.hcl
+terraform.tfstate
+terraform.tfstate.backup

sandbox/grafana.tf

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+resource "helm_release" "grafana" {
+  namespace        = kubernetes_namespace_v1.statuz.id
+  repository       = "https://grafana.github.io/helm-charts"
+  chart            = "grafana"
+  name             = "grafana"
+  version          = "6.61.1"
+  values = [
+    <<-EOT
+      grafana.ini:
+        auth.anonymous:
+          enabled: true
+          org_role: Admin
+      datasources:
+        datasources.yaml:
+          apiVersion: 1
+          datasources:
+          - name: Prometheus
+            type: prometheus
+            url: http://prometheus-server:80
+    EOT
+  ]
+}

sandbox/namespace.tf

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+resource "kubernetes_namespace_v1" "statuz" {
+  metadata {
+    name = "statuz"
+  }
+}

sandbox/prometheus.tf

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+resource "helm_release" "prometheus" {
+  namespace = kubernetes_namespace_v1.statuz.id
+  repository = "https://prometheus-community.github.io/helm-charts"
+  chart = "prometheus"
+  name  = "prometheus"
+  version                    = "25.2.0"
+  values = [
+    <<-EOT
+      serverFiles:
+        rule_files:
+          - /etc/config/recording_rules.yml
+          - /etc/config/alerting_rules.yml
+        prometheus.yml:
+          scrape_configs:
+            - job_name: prometheus
+              honor_timestamps: true
+              scrape_interval: 15s
+              scrape_timeout: 10s
+              metrics_path: /metrics
+              scheme: http
+              static_configs:
+                - targets:
+                    - localhost:9090
+            - job_name: watcher
+              honor_timestamps: true
+              scrape_interval: 15s
+              scrape_timeout: 10s
+              metrics_path: /metrics
+              scheme: http
+              static_configs:
+                - targets:
+                    - watcher:8080
+    EOT
+  ]
+}

sandbox/providers.tf

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+provider "kubernetes" {
+  config_path    = "~/.kube/config"
+  config_context = "minikube"
+}
+
+provider "helm" {
+  kubernetes {
+    config_path    = "~/.kube/config"
+    config_context = "minikube"
+  }
+}