Merge "Fix "Enable influxdb datasource" random error"

ansible/roles/grafana/tasks/post_config.yml

@@ -1,8 +1,14 @@
 ---
-- name: Wait for grafana port
-  wait_for:
-    host: "{{ api_interface_address }}"
-    port: "{{ grafana_server_port }}"
+- name: Wait for grafana application ready
+  uri:
+    url: "{{ internal_protocol }}://{{ kolla_internal_vip_address }}:{{ grafana_server_port }}"
+    status_code: 200
+  register: result
+  until: result.status == 200
+  retries: 10
+  delay: 2
+  run_once: true
+  connection: local
 
 - name: Enable influxdb datasource
   uri: