added update aptcache

install_grafana.yaml

@@ -43,6 +43,15 @@
       until: _update_apt_cache is succeeded
       retries: 5
       delay: 2
+
+    - name: Update apt cache
+      apt:
+        update_cache: true
+      register: _pre_update_apt_cache
+      until: _pre_update_apt_cache is succeeded
+      retries: 5
+      delay: 2
+
   when:
     - ansible_pkg_mgr == "apt"