migrate to v4

public/v4/apps/grafana.yml

@@ -0,0 +1,23 @@
+captainVersion: 4
+services:
+  $$cap_appname:
+    image: grafana/grafana@$$cap_version
+    restart: always
+    volumes:
+      - $$cap_appname-config:/etc/grafana
+      - $$cap_appname-data:/var/lib/grafana
+    caproverExtra:
+      containerHttpPort: "3000"
+caproverOneClickApp:
+  variables:
+    - label: Grafana Docker Hash
+      defaultValue: sha256:4171e7e8c44bb17f9e5bffdcd3710a6d624828d73b4eb638682543c5ce86bbe9
+      description: Starts with 'sha256:'.  Find on Docker Hub.  Default is latest as of 2020-06-30.
+      id: $$cap_version
+  instructions:
+    end: Grafana is now starting.  You can log in with the default login/password of admin/admin.
+    start: "Read more about Grafana: https://grafana.com/"
+  displayName: Grafana
+  isOfficial: true
+  description: Grafana allows you to query, visualize, alert on and understand your metrics no matter where they are stored.
+  documentation: https://hub.docker.com/r/grafana/grafana