Disable grafana Getting Started panel

I think that we do not need this in a production-ready project.

Change-Id: Ief1392c5e8becc90034fca782211a1da30da14ae

ansible/roles/grafana/tasks/post_config.yml

@@ -28,3 +28,17 @@
                response.status == 409 and ("Data source with same name already exists" not in response.json.message|default(""))
   with_dict: "{{ grafana_data_sources }}"
   when: item.value.enabled | bool
+
+- name: Disable Getting Started panel
+  uri:
+    url: "{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ grafana_server_port }}/api/user/helpflags/1"
+    method: PUT
+    user: admin
+    password: "{{ grafana_admin_password }}"
+    force_basic_auth: yes
+    status_code: 200
+  register: grafana_response
+  changed_when: grafana_response.status == 200
+  run_once: true
+  connection: local
+  when: grafana_custom_dashboard_file.stat.exists