Issue #722: Updated grafana cred

Signed-off-by: blesson-james <blesson_james@Dellteam.com>

roles/k8s_start_services/tasks/configure_nginx_prom_grafana.yml

@@ -1,4 +1,4 @@
-#  Copyright 2021 Dell Inc. or its subsidiaries. All Rights Reserved.
+#  Copyright 2022 Dell Inc. or its subsidiaries. All Rights Reserved.
 #
 #  Licensed under the Apache License, Version 2.0 (the "License");
 #  you may not use this file except in compliance with the License.
@@ -13,9 +13,6 @@
 #  limitations under the License.
 ---
 
-- name: Include control_plane_monitoring variables
-  include_vars: "{{ role_path }}/../../control_plane/roles/control_plane_monitoring/vars/main.yml"
-
 - name: Install Nginx
   package:
     name: nginx
@@ -73,10 +70,10 @@
   community.grafana.grafana_datasource:
     name: "hpc-prometheus-{{ ansible_default_ipv4.address }}"
     grafana_url: "http://{{ grafana_svc_ip }}:{{ grafana_svc_port }}"
-    grafana_user: "{{ grafana_username }}"
-    grafana_password: "{{ grafana_password }}"
+    grafana_user: "{{ hostvars['127.0.0.1']['grafana_username'] }}"
+    grafana_password: "{{ hostvars['127.0.0.1']['grafana_password'] }}"
     ds_type: prometheus
     ds_url: "http://{{ ansible_default_ipv4.address }}"
     access: direct
   delegate_to: localhost
-  no_log: true
+  no_log: true