add grafana role

roles/grafana/tasks/import_pub_dashboard.yml

@@ -0,0 +1,11 @@
+---
+- name: "Import public dashboard - '{{ public_dashboard.name }}''"
+  community.grafana.grafana_dashboard:
+    grafana_url: "http://127.0.0.1:{{ grafana_port }}"
+    state: "{{ public_dashboard.state | default('present') }}"
+    overwrite: false
+    dashboard_id: "{{ public_dashboard.id }}"
+    dashboard_revision: "{{ public_dashboard.revision }}"
+    commit_message: "Add public dashboard '{{ public_dashboard.name }}''"
+    url_username: "{{ admin_api_username }}"
+    url_password: "{{ admin_api_password }}"