refactor(configuration): relocate login banner and fix blockinfile markers

roles/configuration/tasks/banner.yml

@@ -23,6 +23,22 @@
         - /mnt/etc/motd.d/insights-client
       failed_when: false
 
+- name: Create login banner
+  ansible.builtin.copy:
+    dest: "{{ item }}"
+    content: |
+      **************************************************************
+      * WARNING: Unauthorized access to this system is prohibited. *
+      * All activities are monitored and logged.                   *
+      * Disconnect immediately if you are not an authorized user.  *
+      **************************************************************
+    owner: root
+    group: root
+    mode: "0644"
+  loop:
+    - /mnt/etc/issue
+    - /mnt/etc/issue.net
+
 - name: Configure sudo banner
   when: system_cfg.features.banner.sudo | bool
   block: