fix(ntp.yml): standardize variable naming and replace command with copy module for backup

roles/common/tasks/ntp.yml

@@ -16,7 +16,7 @@
 - name: (ntp.yml) Check file '/etc/ntpsec/ntp.conf.ORIG' exists
   ansible.builtin.stat:
     path: /etc/ntpsec/ntp.conf.ORIG
-  register: etc_ntpsec_conf_ORIG
+  register: common_etc_ntpsec_conf_orig
   when:
     - ansible_facts.distribution == "Debian"
   tags:
@@ -33,11 +33,17 @@
     - ansible_facts.distribution == "Debian"
 
 - name: (ntp.yml) Backup installation version of file '/etc/ntpsec/ntp.conf'
-  ansible.builtin.command: cp /etc/ntpsec/ntp.conf /etc/ntpsec/ntp.conf.ORIG
+  ansible.builtin.copy:
+    src: /etc/ntpsec/ntp.conf
+    dest: /etc/ntpsec/ntp.conf.ORIG
+    remote_src: true
+    owner: root
+    group: root
+    mode: "0644"
   when:
     - groups['oopen_office_server']|string is search(inventory_hostname)
-    - etc_ntpsec_conf_ORIG.stat.exists == False
-    - local_ntp_service is defined and local_ntp_service|bool
+    - not common_etc_ntpsec_conf_orig.stat.exists
+    - local_ntp_service is defined and local_ntp_service
   tags:
     - ntp-server